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Prevalence and Validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD: A Population-Based Survey of Hong Kong Adults (2024)
Journal Article
Ho, G. W., Chan, K. L., Karatzias, T., Hyland, P., Fung, H. W., & Shevlin, M. (2024). Prevalence and Validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD: A Population-Based Survey of Hong Kong Adults. Asian Journal of Psychiatry, 96, Article 104045. https://doi.org/10.1016/j.ajp.2024.104045

The present study aimed to report the prevalence of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) in the general adult Hong Kong population, and examine the validity of the Chinese International Trauma Questionnaire (ITQ). This... Read More about Prevalence and Validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD: A Population-Based Survey of Hong Kong Adults.

Childhood adversity and mental health admission patterns prior to young person suicide (CHASE): a case-control 36 year linked hospital data study, Scotland UK 1981-2017 (2024)
Journal Article
Dougall, N., Savinc, J., Maxwell, M., Karatzias, T., O’Connor, R. C., Williams, B., …Murray, J. (in press). Childhood adversity and mental health admission patterns prior to young person suicide (CHASE): a case-control 36 year linked hospital data study, Scotland UK 1981-2017. BJPsych Open,

Background Childhood adversity (CA) is associated with increased later mental health (MH) problems and suicidal behaviour. Opportunities for earlier healthcare identification and intervention are needed. Aim To determine associations between hos... Read More about Childhood adversity and mental health admission patterns prior to young person suicide (CHASE): a case-control 36 year linked hospital data study, Scotland UK 1981-2017.

Physical, mental, and behavioral health after adverse and benevolent childhood experiences: a comparison of two adversity conceptualizations (2024)
Journal Article
Ho, G. W., Ling Chan, K., Ho Wong, K., Fong Leung, S., & Karatzias, T. (in press). Physical, mental, and behavioral health after adverse and benevolent childhood experiences: a comparison of two adversity conceptualizations. Psychological Trauma: Theory, Research, Practice, and Policy,

Objective: Adverse and benevolent childhood experiences (ACEs, BCEs) impact health across the lifespan. No known study has investigated these associations across different health domains using a representative adult sample. This study examined the as... Read More about Physical, mental, and behavioral health after adverse and benevolent childhood experiences: a comparison of two adversity conceptualizations.

Mental health in Ukraine in 2023 (2024)
Journal Article
Martsenkovskyi, D., Shevlin, M., Ben-Ezra, M., Bondjers, K., Fox, R., Karatzias, T., …Hyland, P. (2024). Mental health in Ukraine in 2023. European Psychiatry, 67(1), Article e27. https://doi.org/10.1192/j.eurpsy.2024.12

Background Very little is known about the mental health of the adult population of Ukraine following Russia’s full-scale invasion in February 2022. In this study, we estimated the prevalence of seven mental health disorders, the proportion of adults... Read More about Mental health in Ukraine in 2023.

Prevalence and correlates of ICD-11 prolonged grief disorder among adults living in Ukraine during the war with Russia (2024)
Journal Article
Redican, E., Hyland, P., Shevlin, M., Martsenkovskyi, D., Karatzias, T., & Ben-Ezra, M. (2024). Prevalence and correlates of ICD-11 prolonged grief disorder among adults living in Ukraine during the war with Russia. Acta Psychiatrica Scandinavica, 149(5), 425-435. https://doi.org/10.1111/acps.13678

Background: Although high rates of bereavement are evident in war-affected populations, no study has investigated the prevalence and correlates of probable ICD-11 Prolonged Grief Disorder (PGD) under these circumstances. Methods: Participants we... Read More about Prevalence and correlates of ICD-11 prolonged grief disorder among adults living in Ukraine during the war with Russia.

Enhanced Skills Training in Affective and Interpersonal Regulation (ESTAIR) vs. Treatment as Usual (TAU) for ICD-11 Complex PTSD: A pilot randomised controlled trial (The RESTORE trial) (2024)
Journal Article
Karatzias, T., Shevlin, M., Cloitre, M., Busuttil, W., Graham, K., Hendrikx, L., …Murphy, D. (in press). Enhanced Skills Training in Affective and Interpersonal Regulation (ESTAIR) vs. Treatment as Usual (TAU) for ICD-11 Complex PTSD: A pilot randomised controlled trial (The RESTORE trial). Psychotherapy and Psychosomatics,

Introduction Complex PTSD (CPTSD) is a relatively new condition in ICD-11. This pilot randomised controlled trial aimed to compare a four-module intervention developed to target all symptoms of ICD-11 CPTSD, namely Enhanced Skills in Affective and... Read More about Enhanced Skills Training in Affective and Interpersonal Regulation (ESTAIR) vs. Treatment as Usual (TAU) for ICD-11 Complex PTSD: A pilot randomised controlled trial (The RESTORE trial).

Correlates of Posttraumatic Stress Disorder in the Aftermath of the February 2023 Earthquake in Turkey (2024)
Journal Article
Han Alpay, E., Redican, E., Hyland, P., Karatzias, T., & Shevlin, M. (in press). Correlates of Posttraumatic Stress Disorder in the Aftermath of the February 2023 Earthquake in Turkey. Journal of Loss and Trauma, https://doi.org/10.1080/15325024.2024.2314306

On February 6, 2023, an earthquake registering 7.8 on the Richter scale struck southeast Turkey, and this was followed by a second earthquake of magnitude 7.5. The earthquake resulted in widespread loss, devastation, and destruction, and is anticipat... Read More about Correlates of Posttraumatic Stress Disorder in the Aftermath of the February 2023 Earthquake in Turkey.

ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in mental health support-seeking former-serving Australian Defence Force Veterans (2024)
Journal Article
Bressington, D., Hyland, P., Steele, H., Byrne, M., Mitchell, D., Keane, C., …Karatzias, T. (in press). ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in mental health support-seeking former-serving Australian Defence Force Veterans. Australian and New Zealand Journal of Psychiatry, https://doi.org/10.1177/00048674241230197

Background ICD-11 complex posttraumatic stress disorder (CPTSD) is a more severe condition than PTSD, and recent studies indicate it is more prevalent among military samples. In this study, we tested the psychometric properties of the International... Read More about ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in mental health support-seeking former-serving Australian Defence Force Veterans.

Cumulative risk exposure is associated with increased risk for PTSD but not depression or anxiety. Results from a UK clinical sample of children and adolescents (2024)
Journal Article
Turgoose, D., Wilkinson, S., Shevlin, M., & Karatzias, T. (in press). Cumulative risk exposure is associated with increased risk for PTSD but not depression or anxiety. Results from a UK clinical sample of children and adolescents. Developmental Child Welfare, https://doi.org/10.1177/25161032241230980

Background Childhood adversity can include traumatic experiences and exposure to other risk factors; consistently predicting poorer psychosocial outcomes in adulthood. Relatively little research has investigated the impact of cumulative risk exposur... Read More about Cumulative risk exposure is associated with increased risk for PTSD but not depression or anxiety. Results from a UK clinical sample of children and adolescents.

Severe dissociative experiences beyond detachment in a large clinical sample of inpatients with PTSD: Diagnostic and treatment implications (2024)
Journal Article
Kratzer, L., Tschöke, S., Schröder, J., Shevlin, M., Hyland, P., Eckenberger, C., …Karatzias, T. (in press). Severe dissociative experiences beyond detachment in a large clinical sample of inpatients with PTSD: Diagnostic and treatment implications. Psychopathology,

Introduction: The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5; American Psychiatric Association, 2013) contains a dissociative subtype of post-traumatic stress disorder (PTSD) characterized by depersonalization a... Read More about Severe dissociative experiences beyond detachment in a large clinical sample of inpatients with PTSD: Diagnostic and treatment implications.

EMDR v. other psychological therapies for PTSD: a systematic review and individual participant data meta-analysis (2024)
Journal Article
Wright, S. L., Karyotaki, E., Cuijpers, P., Bisson, J., Papola, D., Witteveen, A., …Sijbrandij, M. (in press). EMDR v. other psychological therapies for PTSD: a systematic review and individual participant data meta-analysis. Psychological Medicine, https://doi.org/10.1017/s0033291723003446

Background This systematic review and individual participant data meta-analysis (IPDMA) examined the overall effectiveness of eye movement desensitization and reprocessing (EMDR) in reducing posttraumatic stress disorder (PTSD) symptoms, achieving r... Read More about EMDR v. other psychological therapies for PTSD: a systematic review and individual participant data meta-analysis.

The role of resilience in the relationship between intimate partner violence severity and ICD-11 CPTSD severity (2023)
Journal Article
Fernández-Fillol, C., Hidalgo-Ruzzante, N., Perez-Garcia, M., Hyland, P., Shevlin, M., & Karatzias, T. (2024). The role of resilience in the relationship between intimate partner violence severity and ICD-11 CPTSD severity. European Journal of Psychotraumatology, 15(1), Article 2285671. https://doi.org/10.1080/20008066.2023.2285671

Background: Resilience is a modulating factor in the development of PTSD and CPTSD after exposure to traumatic events. However, the relationship between resilience and ICD-11 CPTSD is not adequately understood in survivors of intimate partner violenc... Read More about The role of resilience in the relationship between intimate partner violence severity and ICD-11 CPTSD severity.

The critical role of affect regulation accounting for increased general distress, risk to self, and lower quality of life in females with EUPD and CPTSD, compared to EUPD alone (2023)
Journal Article
Morris, D., Webb, E., Umpunjun, P., Fox, E., Dickens, A., Leson, A., …Karatzias, T. (2024). The critical role of affect regulation accounting for increased general distress, risk to self, and lower quality of life in females with EUPD and CPTSD, compared to EUPD alone. European Journal of Trauma & Dissociation, 8(1), Article 100374

Background: Complex Post-Traumatic Stress Disorder (CPTSD) and Emotionally Unstable Personality Disorder (EUPD) have shared aetiology and symptomatology, and are associated with multiple comorbidities and poor clinical outcomes. Evidence from studies... Read More about The critical role of affect regulation accounting for increased general distress, risk to self, and lower quality of life in females with EUPD and CPTSD, compared to EUPD alone.

Responding to concerns related to the measurement of ICD-11 complex posttraumatic stress disorder using the International Trauma Questionnaire (2023)
Journal Article
Hyland, P., Brewin, C. R., Cloitre, M., Karatzias, T., & Shevlin, M. (2024). Responding to concerns related to the measurement of ICD-11 complex posttraumatic stress disorder using the International Trauma Questionnaire. Child Abuse and Neglect, 147, Article 106563. https://doi.org/10.1016/j.chiabu.2023.106563

Background: A recent study in this journal by Frewen et al. (2023) provided a critical analysis of the most widely used measure of ICD-11 Complex Posttraumatic Stress Disorder (CPTSD), the International Trauma Questionnaire (ITQ). The article was a t... Read More about Responding to concerns related to the measurement of ICD-11 complex posttraumatic stress disorder using the International Trauma Questionnaire.

The International Grief Questionnaire (IGQ): A new measure of ICD‐11 prolonged grief disorder (2023)
Journal Article
Hyland, P., Redican, E., Karatzias, T., & Shevlin, M. (2024). The International Grief Questionnaire (IGQ): A new measure of ICD‐11 prolonged grief disorder. Journal of Traumatic Stress, 37(1), 141-153. https://doi.org/10.1002/jts.22986

Prolonged grief disorder (PGD) is included in the 11th version of the International Statistical Classification of Diseases and Related Health Problems (ICD‐11). This study sought to test the validity and reliability of a new brief measure to screen f... Read More about The International Grief Questionnaire (IGQ): A new measure of ICD‐11 prolonged grief disorder.

Initial Validation of the International Trauma Questionnaire (ITQ) in a sample of Chilean Adults European Journal of Psychotraumatology (2023)
Journal Article
Fresno, A., Ramos Alvarado, N., Núñez, D., Ulloa, J. L., Arriagada, J., Cloitre, M., …Karatzias, T. (2023). Initial Validation of the International Trauma Questionnaire (ITQ) in a sample of Chilean Adults European Journal of Psychotraumatology. European Journal of Psychotraumatology, 14(2), Article 2263313. https://doi.org/10.1080/20008066.2023.2263313

Background: ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) are stress-related disorders. The International Trauma Questionnaire (ITQ) is a widely used instrument to assess PTSD and CPTSD. To date, there is no evidence of the psy... Read More about Initial Validation of the International Trauma Questionnaire (ITQ) in a sample of Chilean Adults European Journal of Psychotraumatology.

The association between daily life changes and anxiety among Ukrainians following the Russian invasion (2023)
Journal Article
Yafit, L., Rahel, B., Philip, H., Frédérique, V., Mark, S., Thanos, K., …Dmytro, M. (2023). The association between daily life changes and anxiety among Ukrainians following the Russian invasion. Psychiatry Research, 329, Article 115530. https://doi.org/10.1016/j.psychres.2023.115530

This study sought to explore the association between changes in daily life and war-related anxiety. In this study, we analyzed self-reported data from 2,004 Ukrainian adults, obtained through an opportunistic survey in the Ukraine. Our assessment foc... Read More about The association between daily life changes and anxiety among Ukrainians following the Russian invasion.

Assessing the validity and reliability of the International Anxiety Questionnaire and the International Depression Questionnaire in two bereaved national samples (2023)
Journal Article
Hyland, P., Redican, E., Karatzias, T., & Shevlin, M. (2024). Assessing the validity and reliability of the International Anxiety Questionnaire and the International Depression Questionnaire in two bereaved national samples. Clinical Psychology and Psychotherapy, 31(1), Article e2917. https://doi.org/10.1002/cpp.2917

The International Anxiety Questionnaire (IAQ) and International Depression Questionnaire (IDQ) are self-report measures of ICD-11 Generalized Anxiety Disorder (ICD-11 GAD) and ICD-11 Single Episode Depressive Disorder (ICD-11 DD). This study tested t... Read More about Assessing the validity and reliability of the International Anxiety Questionnaire and the International Depression Questionnaire in two bereaved national samples.

Parent-reported posttraumatic stress reactions in children and adolescents: Findings from The Mental Health of Parents and Children in Ukraine Study (2023)
Journal Article
Martsenkovskyi, D., Karatzias, T., Hyland, P., Shevlin, M., Ben-Ezra, M., McElroy, E., …Martsenkovsky, I. (in press). Parent-reported posttraumatic stress reactions in children and adolescents: Findings from The Mental Health of Parents and Children in Ukraine Study. Psychological Trauma: Theory, Research, Practice, and Policy, https://doi.org/10.1037/tra0001583

Background: Despite the long-standing ongoing war in Ukraine, information regarding war-related negative mental health outcomes in children is limited. A nationwide sample of parents in Ukraine was surveyed to assess posttraumatic stress disorder (PT... Read More about Parent-reported posttraumatic stress reactions in children and adolescents: Findings from The Mental Health of Parents and Children in Ukraine Study.

Testing the latent structure of ICD-11 prolonged grief disorder symptoms in the U.K. adult population: An exploratory structural equation modeling approach (2023)
Journal Article
Shevlin, M., Redican, E., Murphy, J., Hyland, P., & Karatzias, T. (2023). Testing the latent structure of ICD-11 prolonged grief disorder symptoms in the U.K. adult population: An exploratory structural equation modeling approach. Journal of Traumatic Stress, 36(6), 1011-1185. https://doi.org/10.1002/jts.22972

The latent structure of ICD-11 prolonged grief disorder (PGD), as measured using the International Prolonged Grief Disorder Scale (IPGDS), was assessed in a large general population sample of bereaved adults from the United Kingdom. Data were derived... Read More about Testing the latent structure of ICD-11 prolonged grief disorder symptoms in the U.K. adult population: An exploratory structural equation modeling approach.

Enhanced Skills Training in Affective and Interpersonal Regulation (ESTAIR): A New Modular Treatment for ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) (2023)
Journal Article
Karatzias, T., Glanaghy, E. M., & Cloitre, M. (2023). Enhanced Skills Training in Affective and Interpersonal Regulation (ESTAIR): A New Modular Treatment for ICD-11 Complex Posttraumatic Stress Disorder (CPTSD). Brain Sciences, 13(9), Article 1300. https://doi.org/10.3390/brainsci13091300

ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) is a relatively new condition; therefore, there is limited available evidence for its treatment. Prior to the recognition of CPTSD as a separate trauma condition, people who met criteria were often... Read More about Enhanced Skills Training in Affective and Interpersonal Regulation (ESTAIR): A New Modular Treatment for ICD-11 Complex Posttraumatic Stress Disorder (CPTSD).

The Relationship of Posttraumatic Stress Disorder and Developmental Trauma Disorder with Childhood Psychopathology: A network analysis (2023)
Journal Article
Knefel, M., Karatzias, T., Spinazzola, J., Shevlin, M., & Ford, J. D. (2023). The Relationship of Posttraumatic Stress Disorder and Developmental Trauma Disorder with Childhood Psychopathology: A network analysis. Journal of Anxiety Disorders, 99, Article 102766

Objective: Potentially traumatic experiences are a major risk factor for mental disorders in children and adolescents. Posttraumatic psychopathology includes trauma-specific disorders such as posttraumatic stress disorder (PTSD) as well as other psyc... Read More about The Relationship of Posttraumatic Stress Disorder and Developmental Trauma Disorder with Childhood Psychopathology: A network analysis.

Accelerating the development of a psychological intervention to restore treatment decision-making capacity in patients with schizophrenia-spectrum disorder: a study protocol for a multi-site, assessor-blinded, pilot Umbrella trial (the DEC:IDES trial) (2023)
Journal Article
Hutton, P., Kelly, J., Taylor, C. D., Williams, B., Emsley, R., Alexander, C. H., …Woodrow, A. (2023). Accelerating the development of a psychological intervention to restore treatment decision-making capacity in patients with schizophrenia-spectrum disorder: a study protocol for a multi-site, assessor-blinded, pilot Umbrella trial (the DEC:IDES trial). Pilot and Feasibility Studies, 9, Article 117. https://doi.org/10.1186/s40814-023-01323-0

Background: A high proportion of patients diagnosed with schizophrenia-spectrum disorders will at some point in their lives be assessed as not having the capacity to make their own decisions about pharmacological treatment or inpatient care (‘capaci... Read More about Accelerating the development of a psychological intervention to restore treatment decision-making capacity in patients with schizophrenia-spectrum disorder: a study protocol for a multi-site, assessor-blinded, pilot Umbrella trial (the DEC:IDES trial).

Is dissociation a fundamental component of ICD-11 Complex Posttraumatic Stress Disorder? (2023)
Journal Article
Hyland, P., Hamer, R., Fox, R., Vallières, F., Karatzias, T., Shevlin, M., & Cloitre, M. (2024). Is dissociation a fundamental component of ICD-11 Complex Posttraumatic Stress Disorder?. Journal of Trauma & Dissociation, 25(1), 45-61. https://doi.org/10.1080/15299732.2023.2231928

ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) is a disorder of six symptom clusters including re-experiencing, avoidance, sense of threat, affective dysregulation, negative self-concept, and disturbed relationships. Unlike earlier descriptions... Read More about Is dissociation a fundamental component of ICD-11 Complex Posttraumatic Stress Disorder?.

Distinguishing between ICD-11 complex post-traumatic stress disorder and borderline personality disorder: clinical guide and recommendations for future research (2023)
Journal Article
Karatzias, T., Bohus, M., Shevlin, M., Hyland, P., Bisson, J. I., Roberts, N., & Cloitre, M. (2023). Distinguishing between ICD-11 complex post-traumatic stress disorder and borderline personality disorder: clinical guide and recommendations for future research. British Journal of Psychiatry, 223(3), 403 - 406. https://doi.org/10.1192/bjp.2023.80

Although CPTSD and BPD are distinct disorders, there is confusion in clinical practice regarding the similarities between the diagnostic profiles of these conditions. We summarize the differences in the diagnostic criteria that are clinically inform... Read More about Distinguishing between ICD-11 complex post-traumatic stress disorder and borderline personality disorder: clinical guide and recommendations for future research.

Investigating the latent structure of the International Trauma Questionnaire to assess ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD in an adult civilian sample during the Ukraine war (2023)
Journal Article
Ho, G. W., Louison Vang, M., Martsenkovskyi, D., Karatzias, T., Ben-Ezra, M., McElroy, E., …Shevlin, M. (2023). Investigating the latent structure of the International Trauma Questionnaire to assess ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD in an adult civilian sample during the Ukraine war. Journal of Traumatic Stress, 36(4), 820-829. https://doi.org/10.1002/jts.22943

The symptom structure of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) and the validity of the International Trauma Questionnaire (ITQ) are yet to be tested among civilians in an active war zone. The present investigation exami... Read More about Investigating the latent structure of the International Trauma Questionnaire to assess ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD in an adult civilian sample during the Ukraine war.

Risk factors, comorbidity and social impairment of ICD-11 PTSD and complex PTSD in Danish treatment-seeking military veterans (2023)
Journal Article
Folke, S., Karstoft, K., Andersen, B., Karatzias, T., Nissen, L. R., & Nielsen, A. B. (2023). Risk factors, comorbidity and social impairment of ICD-11 PTSD and complex PTSD in Danish treatment-seeking military veterans. Journal of Psychiatric Research, 163, 247-253. https://doi.org/10.1016/j.jpsychires.2023.05.055

Purpose While a number of studies have investigated risk factors and comorbidities of ICD-11 post-traumatic stress disorder (PTSD) and complex PTSD (CPTSD) in various trauma exposed samples, few studies have been conducted in military samples. Exist... Read More about Risk factors, comorbidity and social impairment of ICD-11 PTSD and complex PTSD in Danish treatment-seeking military veterans.

How important is reprocessing in personalized multicomponent therapy? Analyzing longitudinal data of inpatients with severe PTSD (2023)
Journal Article
Kratzer, L., Heinz, P., Knefel, M., Weindl, D., Tschöke, S., Biedermann, S. V., …Karatzias, T. (2023). How important is reprocessing in personalized multicomponent therapy? Analyzing longitudinal data of inpatients with severe PTSD. Journal of Nervous and Mental Disease, 211(8), 592-600. https://doi.org/10.1097/NMD.0000000000001671

Treatment guidelines for complex presentations of posttraumatic stress disorder (PTSD) are often cautious about the reprocessing of traumatic memories and recommend multicomponent treatments that are widely used in clinical practice. Yet, the role of... Read More about How important is reprocessing in personalized multicomponent therapy? Analyzing longitudinal data of inpatients with severe PTSD.

Development and initial validation of a short form of the Memories of Home and Family Scale (2023)
Journal Article
Redican, E., Rawers, C., McElroy, E., Hyland, P., Karatzias, T., Ben-Ezra, M., & Shevlin, M. (2023). Development and initial validation of a short form of the Memories of Home and Family Scale. Adversity and Resilience Science, 4(3), 235-244. https://doi.org/10.1007/s42844-023-00097-x

Background: The Memories of Home and Family Scale (MHFS; Shevlin et al., 2022) was developed as a multidimensional measure of subjective memories of experiences at home and with family during childhood. Due to the length of the scale, a short version... Read More about Development and initial validation of a short form of the Memories of Home and Family Scale.

Symptoms and levels of ICD-11 Prolonged Grief Disorder in a representative community sample of UK adults (2023)
Journal Article
Shevlin, M., Redican, E., Hyland, P., Murphy, J., Karatzias, T., McBride, O., …Bentall, R. P. (2023). Symptoms and levels of ICD-11 Prolonged Grief Disorder in a representative community sample of UK adults. Social Psychiatry and Psychiatric Epidemiology, 58(10), 1535-1547. https://doi.org/10.1007/s00127-023-02469-1

Background: Prolonged Grief Disorder (PGD) is a new disorder included in ICD-11 (WHO, 2018). There is a growing body of literature surrounding the prevalence and correlates of ICD-11 PGD symptoms as assessed using various measures. This study was the... Read More about Symptoms and levels of ICD-11 Prolonged Grief Disorder in a representative community sample of UK adults.

Factor Structure of the International Trauma Questionnaire in Trauma Exposed LGBTQ+ Adults: Role of Cumulative Traumatic Events and Minority Stress Heterosexist Experiences (2023)
Journal Article
Charak, R., Cano-Gonzalez, I., Ronzón-Tirado, R., Ford, J. D., Byllesby, B., Shevlin, M., …Cloitre, M. (2023). Factor Structure of the International Trauma Questionnaire in Trauma Exposed LGBTQ+ Adults: Role of Cumulative Traumatic Events and Minority Stress Heterosexist Experiences. Psychological Trauma: Theory, Research, Practice, and Policy, 15(4), 628-636. https://doi.org/10.1037/tra0001440

Exposure to prolonged and/or multiple types of psychological trauma and stressors has shown to be more strongly associated with ICD-11 complex posttraumatic stress disorder (CPTSD) than posttraumatic stress disorder (PTSD). Lesbian, gay, bisexual, tr... Read More about Factor Structure of the International Trauma Questionnaire in Trauma Exposed LGBTQ+ Adults: Role of Cumulative Traumatic Events and Minority Stress Heterosexist Experiences.

Borderline Personality Disorder (BPD) and Complex Post Traumatic Stress Disorder (CPTSD): A network analysis in a highly traumatised clinical sample (2023)
Journal Article
Owczarek, M., Karatzias, T., McElroy, E., Hyland, P., Cloitre, M., Kratzer, L., …Shevlin, M. (2023). Borderline Personality Disorder (BPD) and Complex Post Traumatic Stress Disorder (CPTSD): A network analysis in a highly traumatised clinical sample. Journal of Personality Disorders, 37(1), https://doi.org/10.1521/pedi.2023.37.1.112

Whether Complex Posttraumatic Stress Disorder (CPTSD) and Borderline Personality Disorder (BPD) diagnoses differ substantially enough to warrant separate diagnostic classifications, has been a subject of controversy for years. To contribute to the no... Read More about Borderline Personality Disorder (BPD) and Complex Post Traumatic Stress Disorder (CPTSD): A network analysis in a highly traumatised clinical sample.

ICD-11 PTSD and complex PTSD in Lithuanian university students: Prevalence and associations with trauma exposure (2023)
Journal Article
Truskauskaite, I., Dumarkaite, A., Petrauskaite, G., Andersson, G., Brailovskaia, J., Karatzias, T., …Kazlauskas, E. (2023). ICD-11 PTSD and complex PTSD in Lithuanian university students: Prevalence and associations with trauma exposure. Psychological Trauma: Theory, Research, Practice, and Policy, 15(5), 772–780. https://doi.org/10.1037/tra0001436

Objective: Young adults are at high risk for developing mental disorders. Moreover, trauma exposure and trauma-related disorders in emerging adulthood are highly prevalent. The study aimed to explore the prevalence of traumatic experiences, probable... Read More about ICD-11 PTSD and complex PTSD in Lithuanian university students: Prevalence and associations with trauma exposure.

War exposure, posttraumatic stress disorder, and complex posttraumatic stress disorder among parents living in Ukraine during the Russian war (2023)
Journal Article
Karatzias, T., Shevlin, M., Ben-Ezra, M., McElroy, E., Redican, E., Vang, M. L., …Hyland, P. (2023). War exposure, posttraumatic stress disorder, and complex posttraumatic stress disorder among parents living in Ukraine during the Russian war. Acta Psychiatrica Scandinavica, 147(3), 276-285. https://doi.org/10.1111/acps.13529

Background: High rates of posttraumatic stress disorder (PTSD) have been documented in war‐affected populations. The prevalence of Complex PTSD (CPTSD) has never been assessed in an active war zone. Here, we provide initial data on war‐related experi... Read More about War exposure, posttraumatic stress disorder, and complex posttraumatic stress disorder among parents living in Ukraine during the Russian war.

Sharing data to better understand one of the world’s most significant shared experiences: Data Resource Profile of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study (2022)
Journal Article
McBride, O., Butter, S., Hartman, T. K., Murphy, J., Hyland, P., Shevlin, M., …Bentall, R. P. (2022). Sharing data to better understand one of the world’s most significant shared experiences: Data Resource Profile of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study. International Journal of Population Data Science, 5(4), https://doi.org/10.23889/ijpds.v5i4.1704

This paper serves to alert IJPDS readers to the availability of a major new longitudinal survey data resource, the COVID-19 Psychological Research Consortium (C19PRC) Study, which is being released for secondary use via the Open Science Framework. Th... Read More about Sharing data to better understand one of the world’s most significant shared experiences: Data Resource Profile of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study.

The impact of childhood adversity and mental health episodes prior to young person suicide (CHASE): a longitudinal case-control individual-level linked hospital data study, Scotland UK 1981-2017 (2022)
Presentation / Conference
Dougall, N., Savinc, J., Maxwell, M., Karatzias, T., O’Connor, R. C., Williams, B., …Nolan, L. (2022, November). The impact of childhood adversity and mental health episodes prior to young person suicide (CHASE): a longitudinal case-control individual-level linked hospital data study, Scotland UK 1981-2017. Poster presented at Annual Scientific Meeting of the NRS Mental Health Network: ‘Changing Minds: Rethinking mental health research’, Glasgow

This poster depicts some main findings from a national linked data study of hospital and death records for those young people who have died by suicide. The study summarised in-patient admissions related to childhood adversity and mental health condit... Read More about The impact of childhood adversity and mental health episodes prior to young person suicide (CHASE): a longitudinal case-control individual-level linked hospital data study, Scotland UK 1981-2017.

Can Developmental Trauma Disorder be Distinguished from Posttraumatic Stress Disorder? A Symptom-Level Person-Centered Empirical Approach (2022)
Journal Article
Ford, J., Charak, R., Karatzias, T., Shevlin, M., & Spinazzola, J. (2022). Can Developmental Trauma Disorder be Distinguished from Posttraumatic Stress Disorder? A Symptom-Level Person-Centered Empirical Approach. European Journal of Psychotraumatology, 13(2), Article 2133488. https://doi.org/10.1080/20008066.2022.2133488

Background: Developmental Trauma Disorder (DTD) is a proposed childhood psychiatric diagnosis for psychopathological and developmental sequela of victimization and attachment trauma extending beyond posttraumatic stress disorder (PTSD). Objective:... Read More about Can Developmental Trauma Disorder be Distinguished from Posttraumatic Stress Disorder? A Symptom-Level Person-Centered Empirical Approach.

Early maladaptive schemas and ICD-11 CPTSD symptoms: Treatment considerations (2022)
Journal Article
Greenblatt-Kimron, L., Karatzias, T., Yonatan, M., Shoham, A., Hyland, P., Ben-Ezra, M., & Shevlin, M. (2023). Early maladaptive schemas and ICD-11 CPTSD symptoms: Treatment considerations. Psychology and Psychotherapy: Theory, Research and Practice, 96(1), 117-128. https://doi.org/10.1111/papt.12429

Objectives Early maladaptive schemas (EMS) can result from adverse interpersonal traumatic experiences. The ICD-11 updated the concept of disorders following traumatic experiences with the new disorder of complex post-traumatic stress disorder (CPTS... Read More about Early maladaptive schemas and ICD-11 CPTSD symptoms: Treatment considerations.

The development and initial validation of self-report measures of ICD-11 depressive episode and generalized anxiety disorder: The International Depression Questionnaire (IDQ) and the International Anxiety Questionnaire (IAQ) (2022)
Journal Article
Shevlin, M., Hyland, P., Butter, S., McBride, O., Hartman, T. K., Karatzias, T., & Bentall, R. P. (2023). The development and initial validation of self-report measures of ICD-11 depressive episode and generalized anxiety disorder: The International Depression Questionnaire (IDQ) and the International Anxiety Questionnaire (IAQ). Journal of Clinical Psychology, 79(3), 854-870. https://doi.org/10.1002/jclp.23446

Background The new International Classification of Diseases came into effect in 2022 (ICD-11; World Health Organization, 2022) and included updated descriptions and diagnostic rules for “Depressive Episode” and “Generalized Anxiety Disorder.” No sel... Read More about The development and initial validation of self-report measures of ICD-11 depressive episode and generalized anxiety disorder: The International Depression Questionnaire (IDQ) and the International Anxiety Questionnaire (IAQ).

Mindfulness-based interventions for non-affective psychosis: A comprehensive systematic review and meta-analysis (2022)
Journal Article
Lai King Yip, A., Karatzias, T., & Tong Chien, W. (2022). Mindfulness-based interventions for non-affective psychosis: A comprehensive systematic review and meta-analysis. Annals of Medicine, 54(1), 2340-2353. https://doi.org/10.1080/07853890.2022.2108551

Aim: Although mindfulness-based interventions (MBIs) are routinely used in clinical practice, a comprehensive synthesis of the effectiveness of MBIs for non-affective psychosis has yet to be conducted. The aim in the present review and meta-analysis... Read More about Mindfulness-based interventions for non-affective psychosis: A comprehensive systematic review and meta-analysis.

Childhood adversity, mental health and suicide (CHASE): a longitudinal case-control linked data study of lifetime inpatient records associated with suicide (2022)
Journal Article
Savinc, J., Dougall, N., Maxwell, M., Karatzias, T., O'Connor, R., Williams, B., …Nolan, L. (2022). Childhood adversity, mental health and suicide (CHASE): a longitudinal case-control linked data study of lifetime inpatient records associated with suicide. International Journal of Population Data Science, 7(3), https://doi.org/10.23889/ijpds.v7i3.1878

Objectives Childhood adversity (CA) carries an increased risk of developing later mental health (MH) problems and suicidal behaviour. This study aimed to summarise lifetime hospital attendances for CA and MH in young people who later died by suicide... Read More about Childhood adversity, mental health and suicide (CHASE): a longitudinal case-control linked data study of lifetime inpatient records associated with suicide.

The role of psychosocial factors in explaining sex differences in major depression and generalized anxiety during the COVID-19 pandemic (2022)
Journal Article
Vallières, F., Murphy, J., McBride, O., Shevlin, M., Gilmore, B., Travers, Á., …Hyland, P. (2022). The role of psychosocial factors in explaining sex differences in major depression and generalized anxiety during the COVID-19 pandemic. BMC Public Health, 22(1), Article 1563. https://doi.org/10.1186/s12889-022-13954-8

Background: Understanding how pandemics differentially impact on the socio-protective and psychological outcomes of males and females is important to develop more equitable public health policies. We assessed whether males and females differed on mea... Read More about The role of psychosocial factors in explaining sex differences in major depression and generalized anxiety during the COVID-19 pandemic.

Validation of the International Trauma Questionnaire – Child and Adolescent Version (ITQ-CA) in a Chinese mental health service seeking adolescent sample (2022)
Journal Article
Ho, G., Liu, H., Karatzias, T., Hyland, P., Cloitre, M., Lueger-Schuster, B., …Shevlin, M. (2022). Validation of the International Trauma Questionnaire – Child and Adolescent Version (ITQ-CA) in a Chinese mental health service seeking adolescent sample. Child and Adolescent Psychiatry and Mental Health, 16(1), Article 66. https://doi.org/10.1186/s13034-022-00497-4

Background. The International Trauma Questionnaire – Child and Adolescent version (ITQ-CA) is a self-report measure that assesses posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) based on the diagnostic formulation of the 11th version of... Read More about Validation of the International Trauma Questionnaire – Child and Adolescent Version (ITQ-CA) in a Chinese mental health service seeking adolescent sample.

The network structure of ICD-11 adjustment disorder: A comparison of clinical and non-clinical samples (2022)
Journal Article
Levin, Y., Karatzias, T., Shevlin, M., Ben-Ezra, M., Maercker, A., & Bachem, R. (2022). The network structure of ICD-11 adjustment disorder: A comparison of clinical and non-clinical samples. European Psychiatry, 65(1), Article e43. https://doi.org/10.1192/j.eurpsy.2022.2303

Background: ICD-11 adjustment disorder (AjD) is characterized by two main symptom clusters; preoccupation with the stressor and failure to adapt to the stressor. The network analytic approach provides important information on the structural validity... Read More about The network structure of ICD-11 adjustment disorder: A comparison of clinical and non-clinical samples.

State of Ireland's Mental Health: Findings from a nationally representative survey (2022)
Journal Article
Hyland, P., Vallières, F., Shevlin, M., Bentall, R. P., Butter, S., Hartman, T. K., …Fox, R. (2022). State of Ireland's Mental Health: Findings from a nationally representative survey. Epidemiology and Psychiatric Sciences, 31, Article e47. https://doi.org/10.1017/S2045796022000312

Aims. Current information about the prevalence of various mental health disorders in the general adult population of the Republic of Ireland is lacking. In this study, we examined the prevalence of 12 common mental disorders, the proportion of adults... Read More about State of Ireland's Mental Health: Findings from a nationally representative survey.

Tracking the psychological and socio-economic impact of the COVID-19 pandemic in the UK: a methodological report from Wave 5 of the Covid-19 Psychological Research Consortium (C19PRC) Study (2022)
Journal Article
McBride, O., Butter, S., Murphy, J., Hartman, T. K., McKay, R., Hyland, P., …Bentall, R. P. (2022). Tracking the psychological and socio-economic impact of the COVID-19 pandemic in the UK: a methodological report from Wave 5 of the Covid-19 Psychological Research Consortium (C19PRC) Study. International Journal of Methods in Psychiatric Research, 31(4), Article e1928. https://doi.org/10.1002/mpr.1928

Objectives: The COVID-19 Psychological Research Consortium (C19PRC) Study was established in March 2020 to monitor the psychological and socio-economic impact of the pandemic in the UK and other countries. This paper describes the protocol for Wave 5... Read More about Tracking the psychological and socio-economic impact of the COVID-19 pandemic in the UK: a methodological report from Wave 5 of the Covid-19 Psychological Research Consortium (C19PRC) Study.

Measuring positive memories of home and family during childhood: The development and initial validation of the ‘Memories of Home and Family Scale’ (2022)
Journal Article
Shevlin, M., Redican, E., McElroy, E., Ben-Ezra, M., Karatzias, T., & Hyland, P. (2023). Measuring positive memories of home and family during childhood: The development and initial validation of the ‘Memories of Home and Family Scale’. Current Psychology, 42(26), 22255-22264. https://doi.org/10.1007/s12144-022-03220-w

There is a burgeoning evidence base highlighting the positive influence of benevolent childhood experiences (BCEs), even in the context of adversity. However, few measures are available to assess BCEs. The current study sought to develop and validate... Read More about Measuring positive memories of home and family during childhood: The development and initial validation of the ‘Memories of Home and Family Scale’.

How is Loneliness Related to Anxiety and Depression: a Population Based Network Analysis in the Early Lockdown Period (2022)
Journal Article
Owczarek, M., Nolan, E., Shevlin, M., Butter, S., Karatzias, T., McBride, O., …Hyland, P. (2022). How is Loneliness Related to Anxiety and Depression: a Population Based Network Analysis in the Early Lockdown Period. International Journal of Psychology, 57(5), 585-596. https://doi.org/10.1002/ijop.12851

Introduction High risk of mental health problems is associated with loneliness resulting from social distancing measures and ‘lockdowns’ that have been imposed globally due to the COVID-19 pandemic. This study explores the interconnectedness of lon... Read More about How is Loneliness Related to Anxiety and Depression: a Population Based Network Analysis in the Early Lockdown Period.

Prevalence and Predictors of ICD-11 PTSD and Complex PTSD in Young People (2022)
Journal Article
Redican, E., Hyland, P., Cloitre, M., McBride, O., Karatzias, T., Murphy, J., …Shevlin, M. (2022). Prevalence and Predictors of ICD-11 PTSD and Complex PTSD in Young People. Acta Psychiatrica Scandinavica, 146(2), 110-125. https://doi.org/10.1111/acps.13442

Objective: The prevalence, construct validity, risk factors and psychopathological correlates associated with ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) as measured by the International Trauma Questionnaire for Children and... Read More about Prevalence and Predictors of ICD-11 PTSD and Complex PTSD in Young People.

The Latent Structure of Child and Adolescent Psychopathology and its Association with Different Forms of Trauma and Suicidality and Self-Harm (2022)
Journal Article
Hyland, P., Karatzias, T., Ford, J. D., Fox, R., & Spinazzola, J. (2022). The Latent Structure of Child and Adolescent Psychopathology and its Association with Different Forms of Trauma and Suicidality and Self-Harm. Research on Child and Adolescent Psychopathology, 50(11), 1501-1513. https://doi.org/10.1007/s10802-022-00925-1

The Hierarchical Taxonomy of Psychopathology (HiTOP) is a multidimensional and hierarchical model of the latent structure of psychopathology. While HiTOP has received much support in child/adolescent community samples, fewer studies have assessed thi... Read More about The Latent Structure of Child and Adolescent Psychopathology and its Association with Different Forms of Trauma and Suicidality and Self-Harm.

The Ukraine crisis: Mental health resources for clinicians and researchers (2022)
Journal Article
Shevlin, M., Hyland, P., Karatzias, T., Makhashvili, N., Javakhishvili, J., & Roberts, B. (2022). The Ukraine crisis: Mental health resources for clinicians and researchers. Clinical Child Psychology and Psychiatry, 27(3), 521-523. https://doi.org/10.1177/13591045221097519

The mental health consequences of the war in Ukraine will be enormous. Mental health professionals who are providing care for people in Ukraine, or those resettled elsewhere, may require access to standardized and validated assessment tools. We have... Read More about The Ukraine crisis: Mental health resources for clinicians and researchers.

Can Developmental Trauma Disorder be Distinguished from Posttraumatic Stress Disorder? A Confirmatory Factor Analytic Test of Four Structural Models (2022)
Journal Article
Ford, J. D., Shevlin, M., Karatzias, T., Charak, R., & Spinazzola, J. (2022). Can Developmental Trauma Disorder be Distinguished from Posttraumatic Stress Disorder? A Confirmatory Factor Analytic Test of Four Structural Models. Research on Child and Adolescent Psychopathology, 50, 1207-1218. https://doi.org/10.1007/s10802-022-00916-2

Developmental Trauma Disorder (DTD) is a proposed child psychopathology diagnosis with emotion/somatic, attention/behavioral, and self/relational dysregulation symptoms extending beyond posttraumatic stress disorder (PTSD). Confirmatory factor analys... Read More about Can Developmental Trauma Disorder be Distinguished from Posttraumatic Stress Disorder? A Confirmatory Factor Analytic Test of Four Structural Models.

The Ukraine crisis: Mental health resources for clinicians and researchers (2022)
Journal Article
Shevlin, M., Hyland, P., Karatzias, T., Makhashvili, N., Javakhishvili, J., & Roberts, B. (2022). The Ukraine crisis: Mental health resources for clinicians and researchers. Journal of Traumatic Stress, 35(3), 775-777. https://doi.org/10.1002/jts.22837

The mental health consequences of the war in Ukraine will be enormous. Mental health professionals who are providing care for people in Ukraine, or those resettled elsewhere, may require access to standardized and validated assessment tools. We have... Read More about The Ukraine crisis: Mental health resources for clinicians and researchers.

The network structure of ICD-11 Disorders Specifically Associated with Stress: Adjustment Disorder, Prolonged Grief Disorder, Posttraumatic Stress Disorder (PTSD) and Complex PTSD (2022)
Journal Article
Karatzias, T., Knefel, M., Maercker, A., Cloitre, M., Reed, G., Bryant, R., …Hyland, P. (2022). The network structure of ICD-11 Disorders Specifically Associated with Stress: Adjustment Disorder, Prolonged Grief Disorder, Posttraumatic Stress Disorder (PTSD) and Complex PTSD. Psychopathology, 55, 226-234. https://doi.org/10.1159/000523825

Introduction: The ICD-11 includes a new grouping for “Disorders Specifically Associated with Stress” that contains revised descriptions of Posttraumatic Stress Disorder (PTSD) and Adjustment Disorder (AjD) and new diagnoses in the form of Complex PTS... Read More about The network structure of ICD-11 Disorders Specifically Associated with Stress: Adjustment Disorder, Prolonged Grief Disorder, Posttraumatic Stress Disorder (PTSD) and Complex PTSD.

What makes inpatient treatment for PTSD effective? Investigating daily therapy process factors (2022)
Journal Article
Kratzer, L., Schiepek, G., Heinz, P., Schöller, H., Knefel, M., Haselgruber, A., & Karatzias, T. (2022). What makes inpatient treatment for PTSD effective? Investigating daily therapy process factors. Psychotherapy Research, 32(7), 847-859. https://doi.org/10.1080/10503307.2022.2050830

Objective Therapeutic process factors including alliance and motivation are considered to play a key role in the treatment of post-traumatic stress disorder (PTSD). Yet, our understanding of change processes in therapy is mostly based on theoretical... Read More about What makes inpatient treatment for PTSD effective? Investigating daily therapy process factors.

Cultural concepts of distress and complex PTSD: Future directions for research and treatment (2022)
Journal Article
Heim, E., Karatzias, T., & Maercker, A. (2022). Cultural concepts of distress and complex PTSD: Future directions for research and treatment. Clinical Psychology Review, 93, Article 102143. https://doi.org/10.1016/j.cpr.2022.102143

Complex post-traumatic stress disorder (CPTSD) was introduced as a new diagnostic category in ICD-11. It encompasses PTSD symptoms along with disturbances in self-organization (DSO), i.e., affect dysregulation, negative self-concept, and disturbances... Read More about Cultural concepts of distress and complex PTSD: Future directions for research and treatment.

Validation of the International Trauma Interview (ITI) for the Clinical Assessment of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in a Lithuanian Sample (2022)
Journal Article
Gelezelyte, O., Roberts, N. P., Kvedaraite, M., Bisson, J. I., Brewin, C. R., Cloitre, M., …Kazlauskas, E. (2022). Validation of the International Trauma Interview (ITI) for the Clinical Assessment of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in a Lithuanian Sample. European Journal of Psychotraumatology, 13(1), Article 2037905. https://doi.org/10.1080/20008198.2022.2037905

Background: The 11th revision of the International Classification of Diseases (ICD-11) includes a new diagnosis of complex posttraumatic stress disorder (CPTSD). The International Trauma Interview (ITI) is a novel clinician-administered diagnostic in... Read More about Validation of the International Trauma Interview (ITI) for the Clinical Assessment of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in a Lithuanian Sample.

Validation of the International Adjustment Disorder Questionnaire in Israel and Switzerland (2022)
Journal Article
Levin, Y., Bachem, R., Hyland, P., Karatzias, T., Shevlin, M., Ben-Ezra, M., & Maercker, A. (2022). Validation of the International Adjustment Disorder Questionnaire in Israel and Switzerland. Clinical Psychology and Psychotherapy, 29(4), 1321-1330. https://doi.org/10.1002/cpp.2710

The ICD-11 has introduced a new conceptualization of adjustment disorder (AjD) as a stress response syndrome with core symptoms of preoccupations and failure to adapt to the stressor. The current study aimed to assess the reliability and validity of... Read More about Validation of the International Adjustment Disorder Questionnaire in Israel and Switzerland.

Traumatic life events as risk factors for psychosis and ICD-11 complex PTSD: a gender-specific examination (2021)
Journal Article
Ho, G. W. K., Hyland, P., Karatzias, T., Bressington, D., & Shevlin, M. (2021). Traumatic life events as risk factors for psychosis and ICD-11 complex PTSD: a gender-specific examination. European Journal of Psychotraumatology, 12(1), Article 2009271. https://doi.org/10.1080/20008198.2021.2009271

Background. Numerous studies found robust associations between psychosis and posttraumatic stress disorder (PTSD), but few have examined the relationships between psychosis and recently formulated ICD-11 Complex PTSD (CPTSD). Further, no known study... Read More about Traumatic life events as risk factors for psychosis and ICD-11 complex PTSD: a gender-specific examination.

Mediating role of avoidance of trauma disclosure and social disapproval in ICD-11 post-traumatic stress disorder and complex post-traumatic stress disorder: cross-sectional study in a Lithuanian clinical sample (2021)
Journal Article
Kvedaraite, M., Gelezelyte, O., Karatzias, T., Roberts, N. P., & Kazlauskas, E. (2021). Mediating role of avoidance of trauma disclosure and social disapproval in ICD-11 post-traumatic stress disorder and complex post-traumatic stress disorder: cross-sectional study in a Lithuanian clinical sample. BJPsych Open, 7(6), Article e217. https://doi.org/10.1192/bjo.2021.1055

Background. ICD-11 includes a new trauma-related complex posttraumatic stress disorder (CPTSD), resulting predominantly from reoccurring or prolonged trauma. Previous studies showed that lack of social support is among the strongest predictors of PTS... Read More about Mediating role of avoidance of trauma disclosure and social disapproval in ICD-11 post-traumatic stress disorder and complex post-traumatic stress disorder: cross-sectional study in a Lithuanian clinical sample.

Fatalism and ICD-11 CPTSD and PTSD diagnoses: Results from Nigeria, Kenya & Ghana (2021)
Journal Article
Levin, Y., Bachem, R., Palgi, Y., Hyland, P., Karatzias, T., Shevlin, M., …Maercker, A. (2021). Fatalism and ICD-11 CPTSD and PTSD diagnoses: Results from Nigeria, Kenya & Ghana. European Journal of Psychotraumatology, 12(1), Article 1988452. https://doi.org/10.1080/20008198.2021.1988452

Background: Existing research on posttraumatic sequelae suggests a positive association between fatalism and symptoms of posttraumatic stress disorder (PTSD). However, the associations between fatalism and the new ICD-11 diagnosis of complex PTSD (CP... Read More about Fatalism and ICD-11 CPTSD and PTSD diagnoses: Results from Nigeria, Kenya & Ghana.

The Latent Structure of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD in a General Population Sample from USA: A Factor Mixture Modelling Approach (2021)
Journal Article
Redican, E., Cloitre, M., Hyland, P., McBride, O., Karatzias, T., Murphy, J., & Shevlin, M. (2022). The Latent Structure of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD in a General Population Sample from USA: A Factor Mixture Modelling Approach. Journal of Anxiety Disorders, 85, Article 102497. https://doi.org/10.1016/j.janxdis.2021.102497

The validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD), as measured by the International Trauma Questionnaire (ITQ; Cloitre et al., 2018) has been supported in many factor analytic and mixture modelling studies. There is... Read More about The Latent Structure of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD in a General Population Sample from USA: A Factor Mixture Modelling Approach.

Design, content, and fieldwork procedures of the COVID-19 Psychological Research Consortium (C19PRC) Study – Wave 4 (2021)
Journal Article
McBride, O., Butter, S., Murphy, J., Shevlin, M., Hartman, T. K., Bennett, K. M., …Bentall, R. P. (2022). Design, content, and fieldwork procedures of the COVID-19 Psychological Research Consortium (C19PRC) Study – Wave 4. International Journal of Methods in Psychiatric Research, 31(1), Article e1899. https://doi.org/10.1002/mpr.1899

Objectives: This paper outlines fieldwork procedures for Wave 4 of the COVID-19 Psychological Research Consortium (C19PRC) Study in the UK during November-December 2020. Methods: Respondents provided data on socio-political attitudes, beliefs, and be... Read More about Design, content, and fieldwork procedures of the COVID-19 Psychological Research Consortium (C19PRC) Study – Wave 4.

Detecting and describing stability and change in COVID-19 vaccine receptibility in the United Kingdom and Ireland (2021)
Journal Article
Hyland, P., Vallières, F., Hartman, T. K., McKay, R., Butter, S., Bentall, R. P., …Murphy, J. (2021). Detecting and describing stability and change in COVID-19 vaccine receptibility in the United Kingdom and Ireland. PLOS ONE, 16(11), https://doi.org/10.1371/journal.pone.0258871

COVID-19 continues to pose a threat to global public health. Multiple safe and effective vaccines against COVID-19 are available with one-third of the global population now vaccinated. Achieving a sufficient level of vaccine coverage to suppress COVI... Read More about Detecting and describing stability and change in COVID-19 vaccine receptibility in the United Kingdom and Ireland.

Co-occurrence of severe PTSD, Somatic Symptoms and Dissociation in a large sample of childhood trauma inpatients: A Network Analysis (2021)
Journal Article
Kratzer, L., Knefel, M., Haselgruber, A., Heinz, P., Schennach, R., & Karatzias, T. (2022). Co-occurrence of severe PTSD, Somatic Symptoms and Dissociation in a large sample of childhood trauma inpatients: A Network Analysis. European Archives of Psychiatry and Clinical Neuroscience, 272(5), 897-908. https://doi.org/10.1007/s00406-021-01342-z

Co-occurrence of mental disorders including severe PTSD, somatic symptoms, and dissociation in the aftermath of trauma is common and sometimes associated with poor treatment outcomes. However, the interrelationships between these conditions at sympto... Read More about Co-occurrence of severe PTSD, Somatic Symptoms and Dissociation in a large sample of childhood trauma inpatients: A Network Analysis.

Mental health of adults in Ireland during the first year of the COVID-19 pandemic: Results from a nationally representative, longitudinal study (2021)
Journal Article
Hyland, P., Vallières, F., McBride, O., Murphy, J., Shevlin, M., Bentall, R. P., …Daly, M. (2023). Mental health of adults in Ireland during the first year of the COVID-19 pandemic: Results from a nationally representative, longitudinal study. Psychological Medicine, 53(8), 3766 - 3768. https://doi.org/10.1017/S0033291721004360

No abstract available.

Sex and age differences in ICD-11 PTSD and Complex PTSD: An analysis of four general 2 population samples (2021)
Journal Article
McGinty, G., Fox, R., Ben-Ezra, M., Cloitre, M., Karatzias, T., Shevlin, M., & Hyland, P. (2021). Sex and age differences in ICD-11 PTSD and Complex PTSD: An analysis of four general 2 population samples. European Psychiatry, 64(1), https://doi.org/10.1192/j.eurpsy.2021.2239

Background. Posttraumatic stress disorder (PTSD) is traditionally understood as a disorder that occurs more commonly in women than in men, and in younger age groups than in older age groups. The objective of this study was to determine if these patte... Read More about Sex and age differences in ICD-11 PTSD and Complex PTSD: An analysis of four general 2 population samples.

Complex post-traumatic stress disorder in asylum seekers and victims of trafficking: treatment considerations (2021)
Journal Article
Jowett, S., Argyriou, A., Scherrer, O., Karatzias, T., & Katona, C. (2021). Complex post-traumatic stress disorder in asylum seekers and victims of trafficking: treatment considerations. BJPsych Open, 7(6), Article e181. https://doi.org/10.1192/bjo.2021.1007

Asylum-seekers experience high levels of traumatic events pre, post, and during migration. Polytraumatisation is associated with Complex PTSD (CPTSD), which has not yet been extensively explored in this population. CPTSD is a prevalent and highly dis... Read More about Complex post-traumatic stress disorder in asylum seekers and victims of trafficking: treatment considerations.

Delay discounting and under-valuing of recent information predict poorer adherence to social distancing measures during the COVID-19 pandemic (2021)
Journal Article
Lloyd, A., McKay, R., Hartman, T. K., Vincent, B. T., Murphy, J., Gibson-Miller, J., …Mason, L. (2021). Delay discounting and under-valuing of recent information predict poorer adherence to social distancing measures during the COVID-19 pandemic. Scientific Reports, 11(1), Article 19237. https://doi.org/10.1038/s41598-021-98772-5

The COVID-19 pandemic has brought about unprecedented global changes in individual and collective behaviour. To reduce the spread of the virus, public health bodies have promoted social distancing measures while attempting to mitigate their mental he... Read More about Delay discounting and under-valuing of recent information predict poorer adherence to social distancing measures during the COVID-19 pandemic.

Trajectories of change in internalizing symptoms during the COVID-19 pandemic: A longitudinal population-based study (2021)
Journal Article
Hyland, P., Vallières, F., Daly, M., Butter, S., Bentall, R. P., Fox, R., …Shevlin, M. (2021). Trajectories of change in internalizing symptoms during the COVID-19 pandemic: A longitudinal population-based study. Journal of Affective Disorders, 295, 1024-1031. https://doi.org/10.1016/j.jad.2021.08.145

Background: Longitudinal data indicates that the mental health of the general population may not have been as badly affected by the COVID-19 pandemic as some had feared. Most studies examining change in mental health during the pandemic have assumed... Read More about Trajectories of change in internalizing symptoms during the COVID-19 pandemic: A longitudinal population-based study.

Dimensional latent structure of ICD-11 posttraumatic stress disorder, complex PTSD, and adjustment disorder: Evidence from Ghana, Kenya, and Nigeria (2021)
Journal Article
Charak, R., Cano-Gonzalez, I., Shevlin, M., Ben-Ezra, M., Karatzias, T., & Hyland, P. (2022). Dimensional latent structure of ICD-11 posttraumatic stress disorder, complex PTSD, and adjustment disorder: Evidence from Ghana, Kenya, and Nigeria. Traumatology, 28(2), 223-234. https://doi.org/10.1037/trm0000311

With the release of ICD-11 in 2018, there has been a surge in studies examining the nosology of mental disorders, including disorders associated with stress, namely, posttraumatic stress disorder (PTSD), complex PTSD (CPTSD), and adjustment disorder... Read More about Dimensional latent structure of ICD-11 posttraumatic stress disorder, complex PTSD, and adjustment disorder: Evidence from Ghana, Kenya, and Nigeria.

ICD-11 ‘Mixed Depressive and Anxiety Disorder’ is Clinical Rather than Sub-Clinical and More Common than Anxiety and Depression in the General Population (2021)
Journal Article
Shevlin, M., Hyland, P., Nolan, E., Owczarek, M., Ben-Ezra, M., & Karatzias, T. (2022). ICD-11 ‘Mixed Depressive and Anxiety Disorder’ is Clinical Rather than Sub-Clinical and More Common than Anxiety and Depression in the General Population. British Journal of Clinical Psychology, 61(1), 18-36. https://doi.org/10.1111/bjc.12321

Background: The new International Classification of Diseases was published in 2018 (ICD-11; World Health Organization, 2018) and now includes ‘Mixed depressive and anxiety disorder’ (6A73: MDAD) designated as a mood disorder. This disorder is defined... Read More about ICD-11 ‘Mixed Depressive and Anxiety Disorder’ is Clinical Rather than Sub-Clinical and More Common than Anxiety and Depression in the General Population.

Predicting risk along the suicidality continuum: A longitudinal, nationally representative study of the Irish population during the COVID-19 pandemic (2021)
Journal Article
Hyland, P., Rochford, S., Munnelly, A., Dodd, P., Fox, R., Vallières, F., …Murphy, J. (2022). Predicting risk along the suicidality continuum: A longitudinal, nationally representative study of the Irish population during the COVID-19 pandemic. Suicide and Life-Threatening Behavior, 52(1), 83-98. https://doi.org/10.1111/sltb.12783

Introduction: Little is known about the lifetime prevalence of different indicators of suicidality in the Irish general population; whether suicidality has increased during the COVID-19 pandemic; and what factors associated with belonging to differen... Read More about Predicting risk along the suicidality continuum: A longitudinal, nationally representative study of the Irish population during the COVID-19 pandemic.

Psychological trauma at different developmental stages and ICD-11 CPTSD: The role of dissociation (2021)
Journal Article
Jowett, S., Karatzias, T., Shevlin, M., & Hyland, P. (2022). Psychological trauma at different developmental stages and ICD-11 CPTSD: The role of dissociation. Journal of Trauma and Dissociation, 23(1), 52-67. https://doi.org/10.1080/15299732.2021.1934936

Background: Dissociation is commonly reported by individuals who meet criteria for PTSD and Complex PTSD. However, the association between the age of trauma exposure, dissociation and CPTSD is not well understood. The current study aimed to test whet... Read More about Psychological trauma at different developmental stages and ICD-11 CPTSD: The role of dissociation.

Context, design and conduct of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study – Wave 3 (2021)
Journal Article
McBride, O., Butter, S., Murphy, J., Shevlin, M., Hartman, T. K., Hyland, P., …Bentall, R. P. (2021). Context, design and conduct of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study – Wave 3. International Journal of Methods in Psychiatric Research, 30(3), Article e1880. https://doi.org/10.1002/mpr.1880

Objectives: The COVID-19 Psychological Research Consortium (C19PRC) Study aims to assess the impact of the COVID-19 pandemic in the adult population in multiple countries. This paper describes the third wave of the UK survey (the ‘parent’ strand of t... Read More about Context, design and conduct of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study – Wave 3.

The network structure of ICD-11 Adjustment Disorder: A cross-cultural comparison of three African countries (2021)
Journal Article
Levin, Y., Bachem, R., Karatzias, T., Shevlin, M., Maercker, A., & Ben-Ezra, M. (2021). The network structure of ICD-11 Adjustment Disorder: A cross-cultural comparison of three African countries. British Journal of Psychiatry, 219(4), 557-564. https://doi.org/10.1192/bjp.2021.46

Background: Adjustment disorder (AjD) is one of the most widespread mental disorders worldwide. In ICD-11, AjD is characterized by two main symptom clusters; preoccupation with the stressor and failure to adapt. The network analytic approach has been... Read More about The network structure of ICD-11 Adjustment Disorder: A cross-cultural comparison of three African countries.

A longitudinal assessment of depression and anxiety in the Republic of Ireland before and during the COVID-19 pandemic (2021)
Journal Article
Hyland, P., Shevlin, M., Murphy, J., McBride, O., Fox, R., Bondjers, K., …Vallières, F. (2021). A longitudinal assessment of depression and anxiety in the Republic of Ireland before and during the COVID-19 pandemic. Psychiatry Research, 300, Article 113905. https://doi.org/10.1016/j.psychres.2021.113905

Few studies have examined changes in mental health before and after the outbreak of COVID-19. We examined changes in the prevalence of major depression and generalized anxiety disorder (GAD) between February 2019 and March-April 2020; if there were c... Read More about A longitudinal assessment of depression and anxiety in the Republic of Ireland before and during the COVID-19 pandemic.

PTSD and complex PTSD in adolescence: discriminating factors in a population-based cross-sectional study (2021)
Journal Article
Daniunaite, I., Cloitre, M., Karatzias, T., Shevlin, M., Thoresen, S., Zelviene, P., & Kazlauskas, E. (2021). PTSD and complex PTSD in adolescence: discriminating factors in a population-based cross-sectional study. European Journal of Psychotraumatology, 12(1), Article 1890937. https://doi.org/10.1080/20008198.2021.1890937

Background: Chronic and repeated trauma are well-established risk factors for complex posttraumatic stress disorder (CPTSD) in adult samples. Less is known about how trauma history and other factors contribute to the development of CPTSD in adolescen... Read More about PTSD and complex PTSD in adolescence: discriminating factors in a population-based cross-sectional study.

A Systematic Literature Review of Factor Analytic and Mixture Models of ICD-11 PTSD and CPTSD using the International Trauma Questionnaire (2021)
Journal Article
Redican, E., Nolan, E., Hyland, P., Cloitre, M., McBride, O., Karatzias, T., …Shevlin, M. (2021). A Systematic Literature Review of Factor Analytic and Mixture Models of ICD-11 PTSD and CPTSD using the International Trauma Questionnaire. Journal of Anxiety Disorders, 79, Article 102381. https://doi.org/10.1016/j.janxdis.2021.102381

The 11th version of the International Classification of Diseases (ICD-11; WHO, 2018) describes two distinct trauma related disorders, Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). This review aims to summarise and synthesize evidence... Read More about A Systematic Literature Review of Factor Analytic and Mixture Models of ICD-11 PTSD and CPTSD using the International Trauma Questionnaire.

ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in Treatment Seeking Veterans: Risk factors and comorbidity (2021)
Journal Article
Murphy, D., Karatzias, T., Busuttil, W., Greenberg, N., & Shevlin, M. (2021). ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in Treatment Seeking Veterans: Risk factors and comorbidity. Social Psychiatry and Psychiatric Epidemiology, 56(7), 1289-1298. https://doi.org/10.1007/s00127-021-02028-6

Purpose: Emerging evidence suggests that ICD-11 CPTSD is a more common condition than PTSD in treatment seeking samples although no study has explored risk factors and comorbidities of PTSD and CPTSD in veteran populations. In this study risk factors... Read More about ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) in Treatment Seeking Veterans: Risk factors and comorbidity.

ICD-11 Complex Post Traumatic Stress Disorder (CPTSD) in parents with perinatal bereavement: Implications for treatment and care (2021)
Journal Article
Hollins Martin, C. J., Patterson, J., Paterson, C., Welsh, N., Dougall, N., Karatzias, T., & Williams, B. (2021). ICD-11 Complex Post Traumatic Stress Disorder (CPTSD) in parents with perinatal bereavement: Implications for treatment and care. Midwifery, 96, Article 102947. https://doi.org/10.1016/j.midw.2021.102947

The 11th revision of the WHO International Classification of Diseases (ICD-11) has identified Complex PTSD (CPTSD) as a new condition. Aim: To explore whether the new diagnosis of CPTSD (ICD11) is relevant to women who have experienced perinatal be... Read More about ICD-11 Complex Post Traumatic Stress Disorder (CPTSD) in parents with perinatal bereavement: Implications for treatment and care.

Pandemic buying: Testing a psychological model of over-purchasing and panic buying using data from the United Kingdom and the Republic of Ireland during the early phase of the COVID-19 pandemic (2021)
Journal Article
Bentall, R. P., Lloyd, A., Bennett, K., McKay, R., Mason, L., Murphy, J., …Shevlin, M. (2021). Pandemic buying: Testing a psychological model of over-purchasing and panic buying using data from the United Kingdom and the Republic of Ireland during the early phase of the COVID-19 pandemic. PLOS ONE, 16(1), Article e0246339. https://doi.org/10.1371/journal.pone.0246339

The over-purchasing and hoarding of necessities is a common response to crises, especially in developed economies where there is normally an expectation of plentiful supply. This behaviour was observed internationally during the early stages of the C... Read More about Pandemic buying: Testing a psychological model of over-purchasing and panic buying using data from the United Kingdom and the Republic of Ireland during the early phase of the COVID-19 pandemic.

Comparing the network structure of ICD-11 PTSD and complex PTSD in three African countries   (2021)
Journal Article
Levin, Y., Hyland, P., Karatzias, T., Shevlin, M., & Ben-Ezra, M. (2021). Comparing the network structure of ICD-11 PTSD and complex PTSD in three African countries  . Journal of Psychiatric Research, 136, 80-86. https://doi.org/10.1016/j.jpsychires.2021.01.041

Background: Symptom network analysis has become an essential tool for researchers and clinicians investigating the structure of mental disorders. Two methods have been used; one relies on partial correlations, and the second relies on zero order corr... Read More about Comparing the network structure of ICD-11 PTSD and complex PTSD in three African countries  .

Moral Injury and ICD-11 Complex PTSD (CPTSD) Symptoms among Treatment-Seeking Veterans in the United Kingdom (2021)
Journal Article
Currier, J. M., Foster, J. D., Karatzias, T., & Murphy, D. (2021). Moral Injury and ICD-11 Complex PTSD (CPTSD) Symptoms among Treatment-Seeking Veterans in the United Kingdom. Psychological Trauma: Theory, Research, Practice, and Policy, 13(4), 417-421. https://doi.org/10.1037/tra0000921

Military veterans often encounter events with chronic or repeated traumas of an interpersonal nature that might lead to emotional, relational, and spiritual suffering. Research is needed to assess whether and/or how emerging conceptions of moral inju... Read More about Moral Injury and ICD-11 Complex PTSD (CPTSD) Symptoms among Treatment-Seeking Veterans in the United Kingdom.

Childhood trauma, attachment orientation and Complex PTSD (CPTSD) symptoms in a clinical sample: Implications for treatment (2021)
Journal Article
Karatzias, T., Shevlin, M., Ford, J. D., Fyvie, C., Grandison, G., Hyland, P., & Cloitre, M. (2022). Childhood trauma, attachment orientation and Complex PTSD (CPTSD) symptoms in a clinical sample: Implications for treatment. Development and Psychopathology, 34(3), 1192-1197. https://doi.org/10.1017/S0954579420001509

Although there has been significant work on the association between Posttraumatic Stress Disorder (PTSD) and attachment orientation, this is less the case for Complex PTSD (CPTSD). The primary aim of this paper was to assess the strength of the assoc... Read More about Childhood trauma, attachment orientation and Complex PTSD (CPTSD) symptoms in a clinical sample: Implications for treatment.

Complex PTSD symptoms mediate the association between childhood trauma and physical health problems (2021)
Journal Article
Ho, G. W., Karatzias, T., Vallières, F., Bondjers, K., Shevlin, M., Cloitre, M., …Hyland, P. (2021). Complex PTSD symptoms mediate the association between childhood trauma and physical health problems. Journal of Psychosomatic Research, 142, Article 110358. https://doi.org/10.1016/j.jpsychores.2021.110358

The ICD-11 reconceptualized Posttraumatic Stress Disorder (PTSD) as a narrowly defined fear-based disorder, and introduced Complex PTSD (CPTSD) as a new diagnosis comprised of PTSD symptoms and symptoms of ‘Disturbances in Self-Organization’ (DSO) th... Read More about Complex PTSD symptoms mediate the association between childhood trauma and physical health problems.

PTSD and complex PTSD in sentenced male prisoners in the UK: prevalence, trauma antecedents, and psychiatric comorbidities (2021)
Journal Article
Facer-Irwin, E., Karatzias, T., Bird, A., Blackwood, N., & MacManus, D. (2022). PTSD and complex PTSD in sentenced male prisoners in the UK: prevalence, trauma antecedents, and psychiatric comorbidities. Psychological Medicine, 52(13), 2794-2804. https://doi.org/10.1017/S0033291720004936

Background Posttraumatic stress disorder (PTSD) is highly prevalent within prison settings, yet is often unidentified and undertreated. Complex PTSD (CPTSD) has been recently formally recognised in the International Classification of Diseases 11th r... Read More about PTSD and complex PTSD in sentenced male prisoners in the UK: prevalence, trauma antecedents, and psychiatric comorbidities.

The Authoritarian Dynamic During the COVID-19 Pandemic: Effects on Nationalism and Anti-Immigrant Sentiment (2021)
Journal Article
Hartman, T. K., Stocks, T. V., Mckay, R., Gibson Miller, J., Levita, L., Martinez, A. P., …Bentall, R. P. (2021). The Authoritarian Dynamic During the COVID-19 Pandemic: Effects on Nationalism and Anti-Immigrant Sentiment. Social Psychological and Personality Science, 12(7), 1274-1285. https://doi.org/10.1177/1948550620978023

Research has demonstrated that situational factors such as perceived threats to the social order activate latent authoritarianism. The deadly COVID-19 pandemic presents a rare opportunity to test whether existential threat stemming from an indiscrimi... Read More about The Authoritarian Dynamic During the COVID-19 Pandemic: Effects on Nationalism and Anti-Immigrant Sentiment.

Posttraumatic Stress Disorder and Persistent Somatic Symptoms During the COVID-19 Epidemic: The Role of Sense of Threat (2020)
Journal Article
Jowett, S., Shevlin, M., Hyland, P., & Karatzias, T. (2021). Posttraumatic Stress Disorder and Persistent Somatic Symptoms During the COVID-19 Epidemic: The Role of Sense of Threat. Psychosomatic Medicine, 83(4), 338-344. https://doi.org/10.1097/PSY.0000000000000890

Objective Persistent somatic symptoms, such as pain and fatigue, have been referred to as somatisation. Somatisation is commonly associated with histories of trauma and PTSD. Although previous research has demonstrated that PTSD can predict somatic... Read More about Posttraumatic Stress Disorder and Persistent Somatic Symptoms During the COVID-19 Epidemic: The Role of Sense of Threat.

Sexual Violence and Its Associated Psychosocial Effects in Ireland (2020)
Journal Article
Valliéres, F., Gilmore, B., Nolan, A., Maguire, P., Bondjers, K., McBride, O., …Hyland, P. (2022). Sexual Violence and Its Associated Psychosocial Effects in Ireland. Journal of Interpersonal Violence, 37(11-12), NP9066-NP9088. https://doi.org/10.1177/0886260520978193

Current data on the prevalence and psychosocial correlates of sexual violence in the Republic of Ireland is lacking, with the most recent sexual abuse and violence survey dating back to 2001. The current study sought to identify what proportion of Ir... Read More about Sexual Violence and Its Associated Psychosocial Effects in Ireland.

A randomized controlled trial of a caregiver-facilitated problem-solving-based self-learning program for family carers of people with early psychosis (2020)
Journal Article
Tong Chien, W., Bressington, D., Lubman, D. I., & Karatzias, T. (2020). A randomized controlled trial of a caregiver-facilitated problem-solving-based self-learning program for family carers of people with early psychosis. International Journal of Environmental Research and Public Health, 17(24), Article 9343. https://doi.org/10.3390/ijerph17249343

Facilitated self-help and problem-solving strategies can empower and support family carers to cope with caregiving for people with severe mental illness. This single-blind multi-site randomized controlled trial examined the effects of a 5-month famil... Read More about A randomized controlled trial of a caregiver-facilitated problem-solving-based self-learning program for family carers of people with early psychosis.

The Need for Research on PTSD in Children and Adolescents: A commentary on Elliot et al., 2020 (2020)
Journal Article
Cloitre, M., Brewin, C. R., Kazlauskas, E., Lueger-Schuster, B., Karatzias, T., Hyland, P., & Shevlin, M. (2021). The Need for Research on PTSD in Children and Adolescents: A commentary on Elliot et al., 2020. Journal of Child Psychology and Psychiatry, 62(3), 277-279. https://doi.org/10.1111/jcpp.13361

The recent release of the 11th version of The International Classification of Diseases (ICD‐11: WHO, 2018) marked a significant departure from the previous similarities between it and the Diagnostic and Statistical Manual of Mental Disorders (DSM‐5;... Read More about The Need for Research on PTSD in Children and Adolescents: A commentary on Elliot et al., 2020.

Monitoring the psychological, social, and economic impact of the COVID-19 pandemic in the population: Context, design and conduct of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study (2020)
Journal Article
McBride, O., Murphy, J., Shevlin, M., Gibson-Miller, J., Hartman, T. K., Hyland, P., …Bentall, R. P. (2021). Monitoring the psychological, social, and economic impact of the COVID-19 pandemic in the population: Context, design and conduct of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study. International Journal of Methods in Psychiatric Research, 30(1), Article e1861. https://doi.org/10.1002/mpr.1861

Objectives: The C19PRC Study aims to assess the impact of the COVID-19 pandemic in the adult population of the UK, Republic of Ireland, and Spain. This paper describes the conduct of the first two waves of the UK survey (the ‘parent’ strand of the Co... Read More about Monitoring the psychological, social, and economic impact of the COVID-19 pandemic in the population: Context, design and conduct of the longitudinal COVID-19 Psychological Research Consortium (C19PRC) Study.

Anxiety, Depression, Traumatic Stress, and COVID-19 Related Anxiety in the UK General Population During the COVID-19 Pandemic (2020)
Journal Article
Shevlin, M., McBride, O., Murphy, J., Gibson Miller, J., Hartman, T. K., Levita, L., …Bentall, R. P. (2020). Anxiety, Depression, Traumatic Stress, and COVID-19 Related Anxiety in the UK General Population During the COVID-19 Pandemic. BJPsych Open, 6(6), Article e125. https://doi.org/10.1192/bjo.2020.109

Background The COVID-19 pandemic has created an unprecedented global crisis necessitating drastic changes to living conditions, social-life, personal freedom and economic activity. No study has yet examined the presence of psychiatric symptoms in th... Read More about Anxiety, Depression, Traumatic Stress, and COVID-19 Related Anxiety in the UK General Population During the COVID-19 Pandemic.

Is Posttraumatic Stress Disorder Meaningful in the Context of the COVID-19 Pandemic? A Response to Van Overmeire's Commentary on Karatzias et al. (2020) (2020)
Journal Article
Shevlin, M., Hyland, P., & Karatzias, T. (2020). Is Posttraumatic Stress Disorder Meaningful in the Context of the COVID-19 Pandemic? A Response to Van Overmeire's Commentary on Karatzias et al. (2020). Journal of Traumatic Stress, 33(5), 866-868. https://doi.org/10.1002/jts.22592

In a recently published study in this journal that used a population‐based sample in the Republic of Ireland (Karatzias et al., 2020), we concluded that 17.7% of the sample met the diagnostic requirements for COVID‐19–related posttraumatic stress dis... Read More about Is Posttraumatic Stress Disorder Meaningful in the Context of the COVID-19 Pandemic? A Response to Van Overmeire's Commentary on Karatzias et al. (2020).

Can subjective perceptions of trauma differentiate between ICD-11 PTSD and Complex PTSD? A Cross-cultural Comparison of Three African Countries (2020)
Journal Article
Palgi, Y., Karatzias, T., Hyland, P., Shevlin, M., & Ben-Ezra, M. (2021). Can subjective perceptions of trauma differentiate between ICD-11 PTSD and Complex PTSD? A Cross-cultural Comparison of Three African Countries. Psychological Trauma: Theory, Research, Practice, and Policy, 13(2), 142-148. https://doi.org/10.1037/tra0000966

Background: The primary aim of the current study was to establish the cut-offs scores for the Subjective Traumatic Outlook (STO), a relatively new tool that examines the introspective world view of those exposed to traumatic events. This tool was dev... Read More about Can subjective perceptions of trauma differentiate between ICD-11 PTSD and Complex PTSD? A Cross-cultural Comparison of Three African Countries.

Does requiring trauma exposure affect rates of ICD-11 PTSD and complex PTSD? Implications for DSM-5 (2020)
Journal Article
Hyland, P., Karatzias, T., Shevlin, M., Mcelroy, E., Ben-Ezra, M., Cloitre, M., & Brewin, C. R. (2021). Does requiring trauma exposure affect rates of ICD-11 PTSD and complex PTSD? Implications for DSM-5. Psychological Trauma: Theory, Research, Practice, and Policy, 13(2), 133-141. https://doi.org/10.1037/tra0000908

Objective: There is little evidence that posttraumatic stress disorder (PTSD) is more likely to follow traumatic events defined by Criterion A than non-Criterion A stressors. Criterion A events might have greater predictive validity for ICD-11 PTSD w... Read More about Does requiring trauma exposure affect rates of ICD-11 PTSD and complex PTSD? Implications for DSM-5.

Psychological and pharmacological interventions for post-traumatic stress disorder and comorbid mental health problems following complex traumatic events: systematic review and component network meta-analysis (2020)
Journal Article
Coventry, P. A., Meader, N., Melton, H., Temple, M., Dale, H., Wright, K., …Gilbody, S. (2020). Psychological and pharmacological interventions for post-traumatic stress disorder and comorbid mental health problems following complex traumatic events: systematic review and component network meta-analysis. PLoS Medicine, 17(8), Article e1003262. https://doi.org/10.1371/journal.pmed.1003262

Background: Complex traumatic events associated with armed conflict, forcible displacement, childhood sexual abuse and domestic violence are increasingly prevalent. People exposed to complex traumatic events are at not only at risk of post-traumatic... Read More about Psychological and pharmacological interventions for post-traumatic stress disorder and comorbid mental health problems following complex traumatic events: systematic review and component network meta-analysis.

Adverse and Benevolent Childhood Experiences in Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD): Implications for Trauma-Focused Therapies (2020)
Journal Article
Karatzias, T., Shevlin, M., Fyvie, C., Grandison, G., Garozi, M., Latham, E., …Hyland, P. (2020). Adverse and Benevolent Childhood Experiences in Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD): Implications for Trauma-Focused Therapies. European Journal of Psychotraumatology, 11(1), Article 1793599. https://doi.org/10.1080/20008198.2020.1793599

Objectives We set out to test, using latent variable modelling, whether adverse and benevolent childhood experiences could be best described as a single continuum or two correlated constructs. We also modelled the relationship between adverse and b... Read More about Adverse and Benevolent Childhood Experiences in Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD): Implications for Trauma-Focused Therapies.

ICD-11 Posttraumatic Stress Disorder (PTSD), Complex PTSD (CPTSD) and Adjustment Disorder (AjD): The importance of stressors and traumatic life events (2020)
Journal Article
Karatzias, T., Shevlin, M., Hyland, P., Fyvie, C., Grandison, G., & Ben-Ezra, M. (2021). ICD-11 Posttraumatic Stress Disorder (PTSD), Complex PTSD (CPTSD) and Adjustment Disorder (AjD): The importance of stressors and traumatic life events. Anxiety, Stress and Coping, 34(2), 191-202. https://doi.org/10.1080/10615806.2020.1803006

Background Although ICD-11 adjustment (AjD), posttraumatic stress (PTSD) and complex posttraumatic stress (CPTSD) are commonly diagnosed disorders following exposure to stressful or traumatic life events, their dimensional structure and co-occurren... Read More about ICD-11 Posttraumatic Stress Disorder (PTSD), Complex PTSD (CPTSD) and Adjustment Disorder (AjD): The importance of stressors and traumatic life events.

Anxiety and depression in the Republic of Ireland during the COVID-19 pandemic (2020)
Journal Article
Hyland, P., Shevlin, M., McBride, O., Murphy, J., Karatzias, T., Bentall, R. P., …Vallières, F. (2020). Anxiety and depression in the Republic of Ireland during the COVID-19 pandemic. Acta Psychiatrica Scandinavica, 142(3), 249-256. https://doi.org/10.1111/acps.13219

Background: The COVID-19 pandemic in Ireland resulted in a nationwide quarantine on March 27th, 2020. This study represents the first assessment of rates of anxiety and depression in the general population of Ireland during the pandemic. Aims: Our... Read More about Anxiety and depression in the Republic of Ireland during the COVID-19 pandemic.

Posttraumatic stress symptoms and associated comorbidity during the COVID-19 pandemic in Ireland: A population based study (2020)
Journal Article
Karatzias, T., Shevlin, M., Murphy, J., Mcbride, O., Ben-Ezra, M., Bentall, R. P., …Hyland, P. (2020). Posttraumatic stress symptoms and associated comorbidity during the COVID-19 pandemic in Ireland: A population based study. Journal of Traumatic Stress, 33(4), 365-370. https://doi.org/10.1002/jts.22565

The prevalence of posttraumatic stress disorder (PTSD) as it relates to people’s experiences of the COVID-19 pandemic has yet to determined. This study was conducted to determine rates of COVID-19 related PTSD in the Irish general population, the lev... Read More about Posttraumatic stress symptoms and associated comorbidity during the COVID-19 pandemic in Ireland: A population based study.

Trauma, PTSD, and Complex PTSD in the Republic of Ireland: Prevalence, service use, comorbidity, and risk factors (2020)
Journal Article
Hyland, P., Vallières, F., Cloitre, M., Ben-Ezra, M., Karatzias, T., Olff, M., …Shevlin, M. (2021). Trauma, PTSD, and Complex PTSD in the Republic of Ireland: Prevalence, service use, comorbidity, and risk factors. Social Psychiatry and Psychiatric Epidemiology, 56, Article 649-658 (2021). https://doi.org/10.1007/s00127-020-01912-x

Purpose: This study represents the first assessment of the prevalence of trauma exposure, and Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD), ever conducted in the general population of the Republic of Ireland. Additionally, prevalence... Read More about Trauma, PTSD, and Complex PTSD in the Republic of Ireland: Prevalence, service use, comorbidity, and risk factors.

Lifetime interpersonal victimization profiles and mental health problems in a nationally representative panel of trauma-exposed adults from the United Kingdom (2020)
Journal Article
Charak, R., Vang, M. L., Shevlin, M., Ben-Ezra, M., Karatzias, T., & Hyland, P. (2020). Lifetime interpersonal victimization profiles and mental health problems in a nationally representative panel of trauma-exposed adults from the United Kingdom. Journal of Traumatic Stress, 33(5), 654-664. https://doi.org/10.1002/jts.22527

Exposure to traumatic events has been associated with negative psychological outcomes. There is, however, a dearth of research on revictimization (i.e., experiences of victimization during both childhood and adulthood). The current study examined dif... Read More about Lifetime interpersonal victimization profiles and mental health problems in a nationally representative panel of trauma-exposed adults from the United Kingdom.

Suicidal histories in adults experiencing psychological trauma: exploring vulnerability and protective factors (2020)
Journal Article
Grandison, G., Karatzias, T., Fyvie, C., Hyland, P., O’Connor, R. C., & Dickson, A. (2022). Suicidal histories in adults experiencing psychological trauma: exploring vulnerability and protective factors. Archives of Suicide Research, 26(1), 155-168. https://doi.org/10.1080/13811118.2020.1758262

Objective: This study aimed to identify vulnerability and protective factors for suicidal histories among adults experiencing psychological trauma. Method: Adults seeking treatment for psychological trauma (N=113) completed self-report questionnai... Read More about Suicidal histories in adults experiencing psychological trauma: exploring vulnerability and protective factors.

On top or underneath: where does the general factor of psychopathology fit within a dimensional model of psychopathology? (2020)
Journal Article
Hyland, P., Murphy, J., Shevlin, M., Bentall, R. P., Karatzias, T., Ho, G. W., …McElroy, E. (2021). On top or underneath: where does the general factor of psychopathology fit within a dimensional model of psychopathology?. Psychological Medicine, 51(14), 2422-2432. https://doi.org/10.1017/S003329172000104X

Background: Dimensional models of psychopathology are increasingly common, and there is evidence for the existence of a general dimension of psychopathology (‘p’). The existing literature presented two ways to model p: as a bifactor or as a higher-or... Read More about On top or underneath: where does the general factor of psychopathology fit within a dimensional model of psychopathology?.

Experiences of Veterans with ICD-11 Complex PTSD in Engaging with Services (2020)
Journal Article
Williamson, V., Pearson, E. J., Shevlin, M., Karatzias, T., Macmanus, D., & Murphy, D. (2021). Experiences of Veterans with ICD-11 Complex PTSD in Engaging with Services. Journal of Loss and Trauma, 26(2), 166-178. https://doi.org/10.1080/15325024.2020.1749784

This study aimed to examine how UK military veterans with complex post-traumatic stress disorder (CPTSD) engage with psychological services. Qualitative interviews were conducted with eight veterans with CPTSD. Data were analyzed using thematic analy... Read More about Experiences of Veterans with ICD-11 Complex PTSD in Engaging with Services.

Evidence for the coherence and integrity of the complex PTSD (CPTSD) diagnosis: response to Achterhof et al., (2019) and Ford (2020) (2020)
Journal Article
Cloitre, M., Brewin, C. R., Bisson, J. I., Hyland, P., Karatzias, T., Lueger-Schuster, B., …Shevlin, M. (2020). Evidence for the coherence and integrity of the complex PTSD (CPTSD) diagnosis: response to Achterhof et al., (2019) and Ford (2020). European Journal of Psychotraumatology Supplement, 11(1), Article 1739873. https://doi.org/10.1080/20008198.2020.1739873

This letter to the editor responds to a recent EJPT editorial and following commentary which express concerns about the validity of the ICD-11 complex PTSD (CPTSD) diagnosis. Achterhof and colleagues caution that latent profile analyses and latent cl... Read More about Evidence for the coherence and integrity of the complex PTSD (CPTSD) diagnosis: response to Achterhof et al., (2019) and Ford (2020).

Childhood adversity, mental health and suicide (CHASE): a protocol for a longitudinal case-control linked data study (2020)
Journal Article
Dougall, N., Savinc, J., Maxwell, M., Karatzias, T., O'Connor, R. C., Williams, B., …Nolan, L. (2020). Childhood adversity, mental health and suicide (CHASE): a protocol for a longitudinal case-control linked data study. International Journal of Population Data Science, 5(1), https://doi.org/10.23889/ijpds.v5i1.1338

Introduction Suicide is a tragic outcome with devastating consequences. In 2018, Scotland experienced a 15% increase in suicide from 680 to 784 deaths. This was marked among young people, with an increase of 53% in those aged 15-24, the highest sinc... Read More about Childhood adversity, mental health and suicide (CHASE): a protocol for a longitudinal case-control linked data study.

How important are phase 1 interventions for complex interpersonal trauma? A pilot randomised control trial of a group psychoeducational intervention (2020)
Journal Article
Mahoney, A., Karatzias, T., Dougal, N., & Halliday, K. (2020). How important are phase 1 interventions for complex interpersonal trauma? A pilot randomised control trial of a group psychoeducational intervention. Clinical Psychology and Psychotherapy, 27(4), 597-610. https://doi.org/10.1002/cpp.2447

Although psychoeducational interventions are recommended as phase 1 interventions for complex trauma there is limited evidence on their efficacy. This pilot randomised control trial (RCT) investigated the efficacy of a pure psychoeducational interven... Read More about How important are phase 1 interventions for complex interpersonal trauma? A pilot randomised control trial of a group psychoeducational intervention.

A validation study of the International Trauma Questionnaire to assess ICD-11 posttraumatic stress disorder (PTSD) and Complex PTSD (CPTSD) in treatment seeking veterans (2020)
Journal Article
Murphy, D., Shevlin, M., Pearson, E., Greenberg, N., Wessely, S., Busuttil, W., & Karatzias, T. (2020). A validation study of the International Trauma Questionnaire to assess ICD-11 posttraumatic stress disorder (PTSD) and Complex PTSD (CPTSD) in treatment seeking veterans. British Journal of Psychiatry, 216(3), 132-137. https://doi.org/10.1192/bjp.2020.9

Background: Veterans with PTSD typically report a poorer treatment response than those who have not served in the Armed Forces. A possible explanation is that veterans often present with complex symptoms of PTSD. ICD-11 PTSD and Complex PTSD (CPTSD)... Read More about A validation study of the International Trauma Questionnaire to assess ICD-11 posttraumatic stress disorder (PTSD) and Complex PTSD (CPTSD) in treatment seeking veterans.

A longitudinal study of ICD-11 PTSD and Complex PTSD in the general population of Israel (2020)
Journal Article
Hyland, P., Karatzias, T., Shevlin, M., Cloitre, M., & Ben-Ezra, M. (2020). A longitudinal study of ICD-11 PTSD and Complex PTSD in the general population of Israel. Psychiatry Research, 286, Article 112871. https://doi.org/10.1016/j.psychres.2020.112871

The ICD-11 includes two trauma disorders: Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). CPTSD is a disorder comprised of PTSD and Disturbance in Self-Organization (DSO) symptoms. Evidence supports the construct validity of PTSD and C... Read More about A longitudinal study of ICD-11 PTSD and Complex PTSD in the general population of Israel.

A cross-country psychiatric screening of ICD-11 disorders specifically associated with stress in Kenya, Nigeria and Ghana (2020)
Journal Article
Ben-Ezra, M., Hyland, P., Karatzias, T., Maercker, A., Hamama-Raz, Y., Lavenda, O., …Shevlin, M. (2020). A cross-country psychiatric screening of ICD-11 disorders specifically associated with stress in Kenya, Nigeria and Ghana. European Journal of Psychotraumatology, 11(1), Article 1720972. https://doi.org/10.1080/20008198.2020.1720972

Background The Global Forum for Health Research, with the support of the World Health Organization, highlighted the need to prioritize mental health research in Africa. The introduction of revised descriptions of Posttraumatic Stress Disorder (PTSD... Read More about A cross-country psychiatric screening of ICD-11 disorders specifically associated with stress in Kenya, Nigeria and Ghana.

The validity of ICD-11 PTSD and Complex PTSD in East Asian cultures: findings with young adults from China, Hong Kong, Japan, and Taiwan (2020)
Journal Article
Ho, G. W. K., Hyland, P., Shevlin, M., Chien, W. T., Inoue, S., Yang, P. J., …Karatzias, T. (2020). The validity of ICD-11 PTSD and Complex PTSD in East Asian cultures: findings with young adults from China, Hong Kong, Japan, and Taiwan. European Journal of Psychotraumatology Supplement, 11(1), Article 1717826. https://doi.org/10.1080/20008198.2020.1717826

Background: The ICD-11 classifies posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) as two distinct diagnoses. Few studies have tested the validity of ICD-11 CPTSD in non-Western settings, particularly in Asia. Objective: This study as... Read More about The validity of ICD-11 PTSD and Complex PTSD in East Asian cultures: findings with young adults from China, Hong Kong, Japan, and Taiwan.

Introduction to the Special Section on Complex Posttraumatic Stress Disorder (CPTSD): The Evolution of a Disorder (2019)
Journal Article
Karatzias, T., & Levendosky, A. A. (2019). Introduction to the Special Section on Complex Posttraumatic Stress Disorder (CPTSD): The Evolution of a Disorder. Journal of Traumatic Stress, 32(6), 817-821. https://doi.org/10.1002/jts.22476

The inclusion of complex posttraumatic stress disorder (CPTSD) in the 11th revision of the International Classification of Diseases is an important development in the field of psychotraumatology. Complex PTSD was developed as a response to a clinical... Read More about Introduction to the Special Section on Complex Posttraumatic Stress Disorder (CPTSD): The Evolution of a Disorder.

ICD‐11 Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in the United States: A Population‐Based Study (2019)
Journal Article
Cloitre, M., Hyland, P., Bisson, J. I., Brewin, C. R., Roberts, N. P., Karatzias, T., & Shevlin, M. (2019). ICD‐11 Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in the United States: A Population‐Based Study. Journal of Traumatic Stress, 32(6), 833-842. https://doi.org/10.1002/jts.22454

The primary aim of this study was to provide an assessment of the current prevalence rates of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) among the adult population of the United States and to identify characteristics and cor... Read More about ICD‐11 Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in the United States: A Population‐Based Study.

Examining the Discriminant Validity of Complex Posttraumatic Stress Disorder and Borderline Personality Disorder Symptoms: Results From a United Kingdom Population Sample (2019)
Journal Article
Hyland, P., Karatzias, T., Shevlin, M., & Cloitre, M. (2019). Examining the Discriminant Validity of Complex Posttraumatic Stress Disorder and Borderline Personality Disorder Symptoms: Results From a United Kingdom Population Sample. Journal of Traumatic Stress, 32(6), 855-863. https://doi.org/10.1002/jts.22444

Complex Posttraumatic Stress Disorder (CPTSD) was added to the diagnostic nomenclature in the 11th version of the International Classification of Diseases (ICD-11). Although considerable evidence exists supporting the construct validity of CPTSD, the... Read More about Examining the Discriminant Validity of Complex Posttraumatic Stress Disorder and Borderline Personality Disorder Symptoms: Results From a United Kingdom Population Sample.

Testing the Factor Structure of the International Trauma Questionnaire (ITQ) in African Community Samples from Kenya, Ghana, and Nigeria (2019)
Journal Article
Owczarek, M., Ben-Ezra, M., Karatzias, T., Hyland, P., Vallieres, F., & Shevlin, M. (2020). Testing the Factor Structure of the International Trauma Questionnaire (ITQ) in African Community Samples from Kenya, Ghana, and Nigeria. Journal of Loss and Trauma, 25(4), 348-363. https://doi.org/10.1080/15325024.2019.1689718

The aim of this study was to test the factorial structure of Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) as outlined in the 11th revision of the International Classification of Diseases (ICD-11) in three African community samples us... Read More about Testing the Factor Structure of the International Trauma Questionnaire (ITQ) in African Community Samples from Kenya, Ghana, and Nigeria.

Treating Adults With Complex Posttraumatic Stress Disorder Using a Modular Approach to Treatment: Rationale, Evidence, and Directions for Future Research (2019)
Journal Article
Karatzias, T., & Cloitre, M. (2019). Treating Adults With Complex Posttraumatic Stress Disorder Using a Modular Approach to Treatment: Rationale, Evidence, and Directions for Future Research. Journal of Traumatic Stress, 32(6), 870-876. https://doi.org/10.1002/jts.22457

ICD-11 complex PTSD (CPTSD) is a new condition and therefore there are as yet no clinical trials evaluating interventions for its treatment. In this paper, we provide the rationale for a flexible multi-modular approach to the treatment of CPTSD, its... Read More about Treating Adults With Complex Posttraumatic Stress Disorder Using a Modular Approach to Treatment: Rationale, Evidence, and Directions for Future Research.

The Rivers Centre in Scotland: An Attachment‐Based Service Model for People With Complex Posttraumatic Stress Disorder (2019)
Journal Article
Fyvie, C., Easton, P., Moreton, G., McKeever, J., & Karatzias, T. (2019). The Rivers Centre in Scotland: An Attachment‐Based Service Model for People With Complex Posttraumatic Stress Disorder. Journal of Traumatic Stress, 32(6), 864-869. https://doi.org/10.1002/jts.22458

The Rivers Centre in Edinburgh, Scotland (United Kingdom) operated for nearly 20 years as a traditional specialist trauma service, delivering psychological therapies to an adult population affected by trauma. Embedded in a health and social care syst... Read More about The Rivers Centre in Scotland: An Attachment‐Based Service Model for People With Complex Posttraumatic Stress Disorder.

Measuring ICD-11 Adjustment Disorder: The Development and Initial Validation of the International Adjustment Disorder Questionnaire (2019)
Journal Article
Shevlin, M., Hyland, P., Ben-Ezra, M., Karatzias, T., Cloitre, M., Vallières, F., …Maercker, A. (2020). Measuring ICD-11 Adjustment Disorder: The Development and Initial Validation of the International Adjustment Disorder Questionnaire. Acta Psychiatrica Scandinavica, 141(3), 265-274. https://doi.org/10.1111/acps.13126

Background: Adjustment disorder (AjD) is one of the most frequently used diagnoses in psychiatry but a diagnostic definition for AjD was only introduced in release of the ICD-11. This study sought to develop and validate a new measure operationalizin... Read More about Measuring ICD-11 Adjustment Disorder: The Development and Initial Validation of the International Adjustment Disorder Questionnaire.

ICD-11 PTSD and complex PTSD in treatment-seeking Danish veterans: a latent profile analysis (2019)
Journal Article
Folke, S., Nielsen, A. B. S., Andersen, S. B., Karatzias, T., & Karstoft, K. (2019). ICD-11 PTSD and complex PTSD in treatment-seeking Danish veterans: a latent profile analysis. European Journal of Psychotraumatology, 10(1), Article 1686806. https://doi.org/10.1080/20008198.2019.1686806

Background: The WHO International Classification of Diseases, 11th version (ICD-11), includes a trauma-related diagnosis of complex posttraumatic stress disorder (CPTSD) distinct from posttraumatic stress disorder (PTSD). Results from previous studie... Read More about ICD-11 PTSD and complex PTSD in treatment-seeking Danish veterans: a latent profile analysis.

Translation and psychometric evaluation of the Chinese Adjustment Disorder – New Module 20 (2019)
Journal Article
Lorenz, L., Ho, G. W. K., Chan, A. C. Y., Bressington, D. T., Chien, W. T., Shevlin, M., …Karatzias, T. (2020). Translation and psychometric evaluation of the Chinese Adjustment Disorder – New Module 20. International Journal of Mental Health, 49(2), 170-185. https://doi.org/10.1080/00207411.2019.1684687

The Adjustment Disorder – New Module 20 (ADNM-20) was developed for the assessment of adjustment disorder symptoms. The aim of the present study was to translate and conduct psychometric testing of the Chinese version of the ADNM-20. The English vers... Read More about Translation and psychometric evaluation of the Chinese Adjustment Disorder – New Module 20.

Personally meaningful recovery in people with psychological trauma: Initial validity and reliability of the Individual Recovery Outcomes Counter (I.ROC) (2019)
Journal Article
Rudd, B., Karatzias, T., Bradley, A., Fyvie, C., & Hardie, S. (2020). Personally meaningful recovery in people with psychological trauma: Initial validity and reliability of the Individual Recovery Outcomes Counter (I.ROC). International Journal of Mental Health Nursing, 29(3), 387-398. https://doi.org/10.1111/inm.12671

I.ROC is a brief tool measuring personal recovery designed for collaborative use within support. This study aimed to investigate the psychometric properties of a self-report version of the I.ROC within a trauma population. A total of 107 adults atten... Read More about Personally meaningful recovery in people with psychological trauma: Initial validity and reliability of the Individual Recovery Outcomes Counter (I.ROC).

The relationship between ICD-11 PTSD, complex PTSD and dissociative experiences (2019)
Journal Article
Hyland, P., Shevlin, M., Fyvie, C., Cloitre, M., & Karatzias, T. (2020). The relationship between ICD-11 PTSD, complex PTSD and dissociative experiences. Journal of Trauma and Dissociation, 21(1), 62-72. https://doi.org/10.1080/15299732.2019.1675113

Debate exists in the trauma literature regarding the role of dissociation in traumatic stress disorders. With the release of the new ICD-11 diagnostic guideline for posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD), this issue warrants fu... Read More about The relationship between ICD-11 PTSD, complex PTSD and dissociative experiences.

Childhood Adversity, Resilience, and Mental Health: A Sequential Mixed-Methods Study of Chinese Young Adults (2019)
Journal Article
Ho, G., Chan, A., Shevlin, M., Karatzias, T., Chan, P., & Leung, D. (2021). Childhood Adversity, Resilience, and Mental Health: A Sequential Mixed-Methods Study of Chinese Young Adults. Journal of Interpersonal Violence, 36(19-20), NP10345-NP10370. https://doi.org/10.1177/0886260519876034

Resilience is a key health protective factor for those with adverse childhood experiences (ACEs), but little research has explored how it manifests in early adulthood or across cultures. The purpose of this study was to generate a fuller understandin... Read More about Childhood Adversity, Resilience, and Mental Health: A Sequential Mixed-Methods Study of Chinese Young Adults.

Patterns of Exposure to Adverse Childhood Experiences and their Associations with Mental Health: A Survey of 1,346 University Students in East Asia (2019)
Journal Article
Ho, G. W. K., Bressington, D., Karatzias, T., Chien, W. T., Inoue, S., Yang, P. J., …Hyland, P. (2020). Patterns of Exposure to Adverse Childhood Experiences and their Associations with Mental Health: A Survey of 1,346 University Students in East Asia. Social Psychiatry and Psychiatric Epidemiology, 55, 339-349. https://doi.org/10.1007/s00127-019-01768-w

Adverse childhood experiences (ACEs) constitute a significant global mental health burden. Prior studies typically investigated the impact of ACEs on mental health using a cumulative risk approach; most ACEs studies were also conducted in Western set... Read More about Patterns of Exposure to Adverse Childhood Experiences and their Associations with Mental Health: A Survey of 1,346 University Students in East Asia.

The mediating role of early maladaptive schemas in the relationship between childhood traumatic events and complex posttraumatic stress disorder symptoms in older adults (>64 years) (2019)
Journal Article
Vasilopoulou, E., Karatzias, T., Hyland, P., Wallace, H., & Guzman, A. (2020). The mediating role of early maladaptive schemas in the relationship between childhood traumatic events and complex posttraumatic stress disorder symptoms in older adults (>64 years). Journal of Loss and Trauma, 25(2), 141-158. https://doi.org/10.1080/15325024.2019.1661598

The current study investigated the mediating role of Early Maladaptive Schemas (EMS) in the association between childhood trauma and Complex PTSD (CPTSD) symptom severity in a clinical sample of 42 older adults (>64 years). It was found that EMS tota... Read More about The mediating role of early maladaptive schemas in the relationship between childhood traumatic events and complex posttraumatic stress disorder symptoms in older adults (>64 years).

The relationship between interpersonal trauma and substance misuse in pregnancy – a narrative review of the literature (2019)
Journal Article
Waddell, N., & Karatzias, T. (2019). The relationship between interpersonal trauma and substance misuse in pregnancy – a narrative review of the literature. British Journal of Midwifery, 27(9), 578-588. https://doi.org/10.12968/bjom.2019.27.9.578

Background There is a strong body of evidence supporting associations between interpersonal trauma (IPT) and substance use; however, this tends to focus on associations between childhood trauma and substance use in non-pregnant populations. Neonatal... Read More about The relationship between interpersonal trauma and substance misuse in pregnancy – a narrative review of the literature.

Multiple and interpersonal trauma are risk factors for both post‐traumatic stress disorder and borderline personality disorder: A systematic review on the traumatic backgrounds and clinical characteristics of comorbid post‐traumatic stress disorder/borderline personality disorder groups versus single‐disorder groups (2019)
Journal Article
Jowett, S., Karatzias, T., & Albert, I. (2020). Multiple and interpersonal trauma are risk factors for both post‐traumatic stress disorder and borderline personality disorder: A systematic review on the traumatic backgrounds and clinical characteristics of comorbid post‐traumatic stress disorder/borderline personality disorder groups versus single‐disorder groups. Psychology and Psychotherapy: Theory, Research and Practice, 93(3), 621-638. https://doi.org/10.1111/papt.12248

Background: Both BPD and PTSD are associated with exposure to traumatic events and are highly comorbid. No review to date has addressed the clinical presentations and traumatic backgrounds associated with these disorders although this work is essenti... Read More about Multiple and interpersonal trauma are risk factors for both post‐traumatic stress disorder and borderline personality disorder: A systematic review on the traumatic backgrounds and clinical characteristics of comorbid post‐traumatic stress disorder/borderline personality disorder groups versus single‐disorder groups.

Childhood adversity and psychosis in detained inpatients from medium to high secured units: Results from the Scottish census survey (2019)
Journal Article
Karatzias, T., Shevlin, M., Pitcairn, J., Thomson, L., Mahoney, A., & Hyland, P. (2019). Childhood adversity and psychosis in detained inpatients from medium to high secured units: Results from the Scottish census survey. Child Abuse and Neglect, 96, Article 104094. https://doi.org/10.1016/j.chiabu.2019.104094

Background There is limited data available regarding the most common forms of psychiatric illness, the occurrence of childhood adversity, and the link between childhood adversity and criminal and psychiatric outcomes amongst forensic inpatients.... Read More about Childhood adversity and psychosis in detained inpatients from medium to high secured units: Results from the Scottish census survey.

Risk factors and comorbidity of ICD‐11 PTSD and complex PTSD: Findings from a trauma‐exposed population based sample of adults in the United Kingdom (2019)
Journal Article
Karatzias, T., Hyland, P., Bradley, A., Cloitre, M., Roberts, N. P., Bisson, J. I., & Shevlin, M. (2019). Risk factors and comorbidity of ICD‐11 PTSD and complex PTSD: Findings from a trauma‐exposed population based sample of adults in the United Kingdom. Depression and Anxiety, 36(9), 887-894. https://doi.org/10.1002/da.22934

Background: Following the recently published 11th version of the WHO International Classification of Diseases (ICD-11), we sought to examine the risk factors and comorbidities associated with posttraumatic stress disorder (PTSD) and Complex PTSD (CPT... Read More about Risk factors and comorbidity of ICD‐11 PTSD and complex PTSD: Findings from a trauma‐exposed population based sample of adults in the United Kingdom.

Differentiating Symptom Profiles of ICD-11 PTSD, Complex PTSD and Borderline Personality Disorder: A Latent Class Analysis in a Multiply Traumatised Sample (2019)
Journal Article
Jowett, S., Karatzias, T., Shevlin, M., & Albert, I. (2020). Differentiating Symptom Profiles of ICD-11 PTSD, Complex PTSD and Borderline Personality Disorder: A Latent Class Analysis in a Multiply Traumatised Sample. Personality Disorders: Theory, Research, and Treatment, 11(1), 36-45. https://doi.org/10.1037/per0000346

Background: Complex PTSD (CPTSD) has been included as a diagnostic category in the ICD-11 consisting of six symptom clusters; the three PTSD criteria of Re-experiencing, Avoidance, and Hypervigilance, in addition to three Disturbances of Self-Organis... Read More about Differentiating Symptom Profiles of ICD-11 PTSD, Complex PTSD and Borderline Personality Disorder: A Latent Class Analysis in a Multiply Traumatised Sample.

The distribution of Psychosis, ICD-11 PTSD and Complex PTSD symptoms among a trauma-exposed UK general population sample (2019)
Journal Article
Frost, R., Louison Vang, M., Karatzias, T., Hyland, P., & Shevlin, M. (2019). The distribution of Psychosis, ICD-11 PTSD and Complex PTSD symptoms among a trauma-exposed UK general population sample. Psychosis, 11(3), 187-198. https://doi.org/10.1080/17522439.2019.1626472

Background: Co-occurrence of psychosis and posttraumatic stress disorder (PTSD) symptoms has been demonstrated, but the ICD-11 marks a significant divergence in the formulation of PTSD with a focus on the core symptoms and the addition of Complex PTS... Read More about The distribution of Psychosis, ICD-11 PTSD and Complex PTSD symptoms among a trauma-exposed UK general population sample.

Trauma‐informed care: A qualitative study exploring the views and experiences of professionals in specialist health services for adults with intellectual disabilities (2019)
Journal Article
Truesdale, M., Brown, M., Taggart, L., Bradley, A., Paterson, D., Sirisena, C., …Karatzias, T. (2019). Trauma‐informed care: A qualitative study exploring the views and experiences of professionals in specialist health services for adults with intellectual disabilities. Journal of Applied Research in Intellectual Disabilities, 32(6), 1437-1445. https://doi.org/10.1111/jar.12634

Background: Although, trauma and its sequelae is increasingly recognised as a major morbidity factor in people with intellectual disabilities, there has been a lack of inquiry into how health care professionals address trauma in adults with ID. Aims... Read More about Trauma‐informed care: A qualitative study exploring the views and experiences of professionals in specialist health services for adults with intellectual disabilities.

Disempowered midwives and traumatised women: exploring the parallel processes of care provider interaction that contribute to women developing Post Traumatic Stress Disorder (PTSD) post childbirth (2019)
Journal Article
Patterson, J., Hollins-Martin, C. J., & Karatzias, T. (2019). Disempowered midwives and traumatised women: exploring the parallel processes of care provider interaction that contribute to women developing Post Traumatic Stress Disorder (PTSD) post childbirth. Midwifery, 76, 21-35. https://doi.org/10.1016/j.midw.2019.05.010

Background: Around 4% of women develop Post Traumatic Stress Disorder Post Childbirth (PTSD-PC). During childbirth a woman’s perception of her care provider’s interpersonal verbal and nonverbal relationship behaviours, termed ‘Quality of Provider Int... Read More about Disempowered midwives and traumatised women: exploring the parallel processes of care provider interaction that contribute to women developing Post Traumatic Stress Disorder (PTSD) post childbirth.

Translation and validation of the Chinese ICD-11 International Trauma Questionnaire (ITQ) for the Assessment of Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) (2019)
Journal Article
Ho, G. W. . K., Karatzias, T., Cloitre, M., Chan, A. C. Y., Bressington, D., Chien, W. T., …Shevlin, M. (2019). Translation and validation of the Chinese ICD-11 International Trauma Questionnaire (ITQ) for the Assessment of Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). European Journal of Psychotraumatology, 10(1), https://doi.org/10.1080/20008198.2019.1608718

Two stress related disorders have been proposed for inclusion in the revised ICD11: Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). The International Trauma Questionnaire (ITQ) is a bespoke measure of PTSD and CPTSD, and has been widel... Read More about Translation and validation of the Chinese ICD-11 International Trauma Questionnaire (ITQ) for the Assessment of Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD).

Positive changes and appreciation of life among economic immigrants in Scotland. (2019)
Journal Article
Bak-Klimek, A., Karatzias, T., Elliott, L., Dickson, A., & MacLean, R. (2020). Positive changes and appreciation of life among economic immigrants in Scotland. Journal of International Migration and Integration, 21, Article 57-76. https://doi.org/10.1007/s12134-019-00669-w

Objectives: Existing qualitative studies focussed predominantly on exploring immigrants’ stress, distress and coping aimed at reducing stress. Little attention has been paid to immigrants’ psychological growth or positive life changes. In the presen... Read More about Positive changes and appreciation of life among economic immigrants in Scotland..

Psychological interventions for ICD-11 Complex PTSD symptoms: Systematic review and meta-analysis (2019)
Journal Article
Karatzias, T., Murphy, P., Cloitre, M., Bisson, J., Roberts, N., Shevlin, M., …Hutton, P. (2019). Psychological interventions for ICD-11 Complex PTSD symptoms: Systematic review and meta-analysis. Psychological Medicine, 49(11), 1761-1775. https://doi.org/10.1017/S0033291719000436

Background: The 11th revision to the WHO International Classification of Diseases (ICD-11) identified Complex Posttraumatic Stress Disorder (CPTSD) as a new condition. There is a pressing need to identify effective CPTSD interventions. Methods: We co... Read More about Psychological interventions for ICD-11 Complex PTSD symptoms: Systematic review and meta-analysis.

A mixed‐methods, randomized controlled feasibility trial of Eye Movement Desensitization and Reprocessing (EMDR) plus Standard Care (SC) versus SC alone for DSM‐5 Posttraumatic Stress Disorder (PTSD) in adults with intellectual disabilities (2019)
Journal Article
Karatzias, T., Brown, M., Taggart, L., Truesdale, M., Sirisena, C., Walley, R., …Paterson, D. (2019). A mixed‐methods, randomized controlled feasibility trial of Eye Movement Desensitization and Reprocessing (EMDR) plus Standard Care (SC) versus SC alone for DSM‐5 Posttraumatic Stress Disorder (PTSD) in adults with intellectual disabilities. Journal of Applied Research in Intellectual Disabilities, 32(4), 806-818. https://doi.org/10.1111/jar.12570

Objective: To report the results of the first randomised feasibility trial of Eye Movement Desensitisation and Reprocessing (EMDR) plus Standard Care (SC) vs. SC alone for DSM-5 Posttraumatic Stress Disorder (PTSD) in adults with intellectual disabil... Read More about A mixed‐methods, randomized controlled feasibility trial of Eye Movement Desensitization and Reprocessing (EMDR) plus Standard Care (SC) versus SC alone for DSM‐5 Posttraumatic Stress Disorder (PTSD) in adults with intellectual disabilities.

A Cross‐Cultural Comparison of ICD‐11 Complex Posttraumatic Stress Disorder Symptom Networks in Austria, the United Kingdom, and Lithuania (2019)
Journal Article
Knefel, M., Lueger-Schuster, B., Bisson, J., Karatzias, T., Kazlauskas, E., & Roberts, N. P. (2020). A Cross‐Cultural Comparison of ICD‐11 Complex Posttraumatic Stress Disorder Symptom Networks in Austria, the United Kingdom, and Lithuania. Journal of Traumatic Stress, 33(1), 41-51. https://doi.org/10.1002/jts.22361

The 11th revision of the World Health Organization's International Classification of Diseases (ICD-11) may include a new disorder, Complex Posttraumatic Stress Disorder (CPTSD). The network approach to psychopathology enables investigation of the str... Read More about A Cross‐Cultural Comparison of ICD‐11 Complex Posttraumatic Stress Disorder Symptom Networks in Austria, the United Kingdom, and Lithuania.

The replicability of ICD-11 complex post-traumatic stress disorder symptom networks in adults (2019)
Journal Article
Knefel, M., Karatzias, T., Ben-Ezra, M., Cloitre, M., Lueger-Schuster, B., & Maercker, A. (2019). The replicability of ICD-11 complex post-traumatic stress disorder symptom networks in adults. British Journal of Psychiatry, 214(6), 361-368. https://doi.org/10.1192/bjp.2018.286

Background: The 11th revision of the World Health Organization's International Classification of Diseases (ICD-11) includes a new disorder, Complex Posttraumatic Stress Disorder (CPTSD). A network approach to CPTSD will enable investigation of the st... Read More about The replicability of ICD-11 complex post-traumatic stress disorder symptom networks in adults.

A feasibility study of a cross-diagnostic, CBT-based psychological intervention for acute mental health inpatients: Results, challenges, and methodological implications (2018)
Journal Article
Paterson, C., Karatzias, T., Harper, S., Dougall, N., Dickson, A., & Hutton, P. (2019). A feasibility study of a cross-diagnostic, CBT-based psychological intervention for acute mental health inpatients: Results, challenges, and methodological implications. British Journal of Clinical Psychology, 58(2), 211-230. https://doi.org/10.1111/bjc.12209

Objectives Acute psychiatric inpatient wards are characterised by minimal provision of therapeutic activities and high readmission rates. Implementation of a comprehensive inpatient psychological intervention service has been recommended to overcome... Read More about A feasibility study of a cross-diagnostic, CBT-based psychological intervention for acute mental health inpatients: Results, challenges, and methodological implications.

Examining Patterns of Adversity in Chinese Young Adults Using the Adverse Childhood Experiences – International Questionnaire (ACE-IQ) (2018)
Journal Article
Ho, G. W. K., Chan, A. C. Y., Chien, W., Bressington, D. T., & Karatzias, T. (2019). Examining Patterns of Adversity in Chinese Young Adults Using the Adverse Childhood Experiences – International Questionnaire (ACE-IQ). Child Abuse and Neglect, 88, 179-188. https://doi.org/10.1016/j.chiabu.2018.11.009

Ample evidence supports significant and enduring associations between adverse childhood experiences (ACEs) and negative outcomes later in life. Subsets of ACEs (e.g. childhood maltreatment and household dysfunction) have been examined in Chinese popu... Read More about Examining Patterns of Adversity in Chinese Young Adults Using the Adverse Childhood Experiences – International Questionnaire (ACE-IQ).

Holistic needs assessment in brain cancer patients: A systematic review of available tools (2018)
Journal Article
Afseth, J., Neubeck, L., Karatzias, T., & Grant, R. (2019). Holistic needs assessment in brain cancer patients: A systematic review of available tools. European Journal of Cancer Care, 28(3), Article e12931. https://doi.org/10.1111/ecc.12931

This systematic review describes tools which could be considered for use for holistic needs assessment in Brain Cancer. MEDLINE, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and PsycINFO were searched. Studies where included wh... Read More about Holistic needs assessment in brain cancer patients: A systematic review of available tools.

Hyper and hypo-activation affective dysregulation symptoms are integral in complex PTSD (CPTSD): Results from a non-clinical Israeli sample (2018)
Journal Article
Karatzias, T., Hyland, P., Ben-Ezra, M., & Shevlin, M. (2018). Hyper and hypo-activation affective dysregulation symptoms are integral in complex PTSD (CPTSD): Results from a non-clinical Israeli sample. International Journal of Methods in Psychiatric Research, 27(4), Article e1745. https://doi.org/10.1002/mpr.1745

Objectives: The current study sought to further assess the nature of the Affect Dysregulation (AD) cluster of the ICD-11 proposal for Complex PTSD (CPTSD) in a non-clinical sample. Methods: An online survey sample from Israel (n = 618) completed a... Read More about Hyper and hypo-activation affective dysregulation symptoms are integral in complex PTSD (CPTSD): Results from a non-clinical Israeli sample.

Quality not quantity: loneliness subtypes, psychological trauma, and mental health in the US adult population (2018)
Journal Article
Power, J. M., Hyland, P., Shevlin, M., Cloitre, M., Karatzias, T., Vallières, F., …Mchugh Power, J. (2019). Quality not quantity: loneliness subtypes, psychological trauma, and mental health in the US adult population. Social Psychiatry and Psychiatric Epidemiology, 54(9), 1089-1099. https://doi.org/10.1007/s00127-018-1597-8

Purpose: Loneliness is a recognised public-health concern that is traditionally regarded as a unidimensional construct. Theories of loneliness predict the existence of subtypes of loneliness. In this study, latent class analysis (LCA) was used to tes... Read More about Quality not quantity: loneliness subtypes, psychological trauma, and mental health in the US adult population.

Is self-compassion a worthwhile therapeutic target for ICD-11 Complex PTSD (CPTSD)? (2018)
Journal Article
Karatzias, T., Hyland, P., Bradley, A., Fyvie, C., Logan, K., Easton, P., …Shevlin, M. (2019). Is self-compassion a worthwhile therapeutic target for ICD-11 Complex PTSD (CPTSD)?. Behavioural and Cognitive Psychotherapy, 47(3), 257-269. https://doi.org/10.1017/S1352465818000577

Background Two ‘sibling’ disorders have been proposed for the fourthcoming 11th version of the International Classification of Diseases (ICD-11); Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). Examining psychological factors that may... Read More about Is self-compassion a worthwhile therapeutic target for ICD-11 Complex PTSD (CPTSD)?.

Derealisation and self-harm strategies are used to regulate disgust, fear and sadness in adult survivors of childhood sexual abuse (2018)
Journal Article
Bradley, A., Karatzias, T., & Coyle, E. (2019). Derealisation and self-harm strategies are used to regulate disgust, fear and sadness in adult survivors of childhood sexual abuse. Clinical Psychology and Psychotherapy, 26(1), 94-104. https://doi.org/10.1002/cpp.2333

Emotion regulation (ER) difficulties have been identified as an important target for clinical intervention in the treatment of posttraumatic stress disorder (PTSD) symptoms in survivors of childhood sexual abuse (CSA). However, there is limited resea... Read More about Derealisation and self-harm strategies are used to regulate disgust, fear and sadness in adult survivors of childhood sexual abuse.

A systematic review and meta-analysis of group treatments for adults with symptoms associated with complex post-traumatic stress disorder (2018)
Journal Article
Mahoney, A., Karatzias, T., & Hutton, P. (2018). A systematic review and meta-analysis of group treatments for adults with symptoms associated with complex post-traumatic stress disorder. Journal of Affective Disorders, https://doi.org/10.1016/j.jad.2018.09.059

Background: No previous meta-analyses have specifically investigated the effectiveness of psychological group therapy for symptoms associated with complex interpersonal trauma, including whether trauma memory processing (TMP) therapies are superior t... Read More about A systematic review and meta-analysis of group treatments for adults with symptoms associated with complex post-traumatic stress disorder.

The International Trauma Questionnaire: development of a self-report measure of ICD-11 PTSD and complex PTSD (2018)
Journal Article
Cloitre, M., Shevlin, M., Brewin, C. R., Bisson, J. I., Roberts, N. P., Maercker, A., …Hyland, P. (2018). The International Trauma Questionnaire: development of a self-report measure of ICD-11 PTSD and complex PTSD. Acta Psychiatrica Scandinavica, 138(6), 536-546. https://doi.org/10.1111/acps.12956

Objective: The purpose of this study was to finalize the development of the International Trauma Questionnaire (ITQ); a self-report diagnostic measure of Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD), as defined in the 11th version of... Read More about The International Trauma Questionnaire: development of a self-report measure of ICD-11 PTSD and complex PTSD.

PTSD post-childbirth: a systematic review of women’s and midwives’ subjective experiences of care provider interaction (2018)
Journal Article
Patterson, J., Hollins Martin, C., & Karatzias, T. (2019). PTSD post-childbirth: a systematic review of women’s and midwives’ subjective experiences of care provider interaction. Journal of Reproductive and Infant Psychology, 37(1), 56-83. https://doi.org/10.1080/02646838.2018.1504285

Objective: To review primary research from within the literature regarding PTSD Post-Childbirth (PTSD-PC), that focussed on Quality of Provider Interaction (QPI) from either the perspective of women who have developed PTSD-PC, or midwives. Backgroun... Read More about PTSD post-childbirth: a systematic review of women’s and midwives’ subjective experiences of care provider interaction.

From child maltreatment to ICD-11 complex post-traumatic stress symptoms: The role of emotion regulation and re-victimisation (2018)
Journal Article
Knefel, M., Lueger-Schuster, B., Karatzias², T., Shevlin, M., & Hyland, P. (2019). From child maltreatment to ICD-11 complex post-traumatic stress symptoms: The role of emotion regulation and re-victimisation. Journal of Clinical Psychology, 75(3), 392-403. https://doi.org/10.1002/jclp.22655

Objective: Complex Posttraumatic Stress Disorder (CPTSD) will be introduced in ICD-11 and comprises symptoms of PTSD and disturbances in self-organisation (DSO). The association of trauma with PTSD and DSO is not yet fully understood. We investigated... Read More about From child maltreatment to ICD-11 complex post-traumatic stress symptoms: The role of emotion regulation and re-victimisation.

Can the REBT theory explain loneliness? Theoretical and clinical applications (2018)
Journal Article
Hyland, P., McGinty, G., Karatzias, T., Murphy, J., Vallières, F., & McHugh Power, J. (2019). Can the REBT theory explain loneliness? Theoretical and clinical applications. Cognitive Behaviour Therapy, 48(1), 39-51. https://doi.org/10.1080/16506073.2018.1475505

Loneliness is a common psychological experience affecting a significant minority of the general population. Loneliness may in part be related to the existence of dysfunctional cognitive evaluations. To date, however, loneliness has yet to be explicit... Read More about Can the REBT theory explain loneliness? Theoretical and clinical applications.

Multiple traumatisation and subsequent psychopathology in people with intellectual disabilities and DSM‐5 PTSD: a preliminary study (2018)
Journal Article
Mason‐Roberts, S., Bradley, A., Karatzias, T., Brown, M., Paterson, D., Walley, R., …Sirisena, C. (2018). Multiple traumatisation and subsequent psychopathology in people with intellectual disabilities and DSM‐5 PTSD: a preliminary study. Journal of Intellectual Disability Research, 62(8), 730-736. https://doi.org/10.1111/jir.12505

Background: Individuals with intellectual disability (ID) are at greater risk of exposure to traumatic life events compared to the non-ID population. Yet no study to date has examined the role of multiple traumatisation and subsequent psychopathology... Read More about Multiple traumatisation and subsequent psychopathology in people with intellectual disabilities and DSM‐5 PTSD: a preliminary study.

Negotiating boundaries of care: an interpretative phenomenological analysis of the relational conflicts surrounding home mechanical ventilation following traumatic spinal cord injury (2018)
Journal Article
Dickson, A., Karatzias, T., Gullone, A., Grandison, G., Allan, D., Park, J., & Flowers, P. (2018). Negotiating boundaries of care: an interpretative phenomenological analysis of the relational conflicts surrounding home mechanical ventilation following traumatic spinal cord injury. Health Psychology and Behavioral Medicine, 6(1), 120-135. https://doi.org/10.1080/21642850.2018.1462708

Objectives: The aim of this study is to explore the phenomena of mechanical ventilation following traumatic spinal cord injury from three simultaneous perspectives; patients who require full-time mechanical ventilation (n=8), their informal family ca... Read More about Negotiating boundaries of care: an interpretative phenomenological analysis of the relational conflicts surrounding home mechanical ventilation following traumatic spinal cord injury.

Psychological therapy for inpatients receiving acute mental health care: A systematic review and meta-analysis of controlled trials (2018)
Journal Article
Paterson, C., Karatzias, T., Dickson, A., Harper, S., Dougall, N., & Hutton, P. (2018). Psychological therapy for inpatients receiving acute mental health care: A systematic review and meta-analysis of controlled trials. British Journal of Clinical Psychology, 57(4), 453-472. https://doi.org/10.1111/bjc.12182

Objectives The effectiveness of psychological therapies for those receiving acute adult mental health inpatient care remains unclear, partly because of the difficulty in conducting randomised controlled trials (RCTs) in this setting. The aim of this... Read More about Psychological therapy for inpatients receiving acute mental health care: A systematic review and meta-analysis of controlled trials.

Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in DSM-5 and ICD-11: Clinical and Behavioral Correlates: Correlates of PTSD and CPTSD (2018)
Journal Article
Hyland, P., Shevlin, M., Fyvie, C., & Karatzias, T. (2018). Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in DSM-5 and ICD-11: Clinical and Behavioral Correlates: Correlates of PTSD and CPTSD. Journal of Traumatic Stress, 31(2), 174-180. https://doi.org/10.1002/jts.22272

The American Psychiatric Association and the World Health Organization provide distinct trauma-based diagnoses in the fifth edition of the Diagnostic and Statistical Manual (DSM-5), and the forthcoming 11th version of the International Classification... Read More about Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in DSM-5 and ICD-11: Clinical and Behavioral Correlates: Correlates of PTSD and CPTSD.

Dissociation fully mediates the relationship between childhood sexual and emotional abuse and DSM-5 PTSD in a sample of treatment-seeking adults (2018)
Journal Article
Louison Vang, M., Shevlin, M., Karatzias, T., Fyvie, C., & Hyland, P. (2018). Dissociation fully mediates the relationship between childhood sexual and emotional abuse and DSM-5 PTSD in a sample of treatment-seeking adults. European Journal of Trauma & Dissociation, 2(4), 173-178. https://doi.org/10.1016/j.ejtd.2018.02.004

Introduction: Child-abuse and neglect are associated with increased risk of adult PTSD and dissociation. Recent research suggests that dissociation mediates the relationship between child maltreatment and PTSD, however, there is a lack of clarity reg... Read More about Dissociation fully mediates the relationship between childhood sexual and emotional abuse and DSM-5 PTSD in a sample of treatment-seeking adults.

Posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) as per ICD-11 proposals: A population study in Israel (2018)
Journal Article
Ben-Ezra, M., Karatzias, T., Hyland, P., Brewin, C. R., Cloitre, M., Bisson, J. I., …Shevlin, M. (2018). Posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) as per ICD-11 proposals: A population study in Israel. Depression and Anxiety, 35(3), 264-274. https://doi.org/10.1002/da.22723

Background: The current study sought to advance the existing literature by providing the first assessment of the factorial and discriminant validity of the ICD-11 proposals for PTSD and CPTSD in a nation-wide level. Methods: A nationally representat... Read More about Posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) as per ICD-11 proposals: A population study in Israel.

The role of negative cognitions, emotion regulation strategies, and attachment style in complex post-traumatic stress disorder: Implications for new and existing therapies (2018)
Journal Article
Brewin, C. R., Shevlin, M., Kitchiner, N. J., Bisson, J. I., Roberts, N. P., Karatzias, T., …Roberts, N. (2018). The role of negative cognitions, emotion regulation strategies, and attachment style in complex post-traumatic stress disorder: Implications for new and existing therapies. British Journal of Clinical Psychology, https://doi.org/10.1111/bjc.12172

Objective We set out to investigate the association between negative trauma-related cognitions, emotional regulation strategies, and attachment style and Complex Posttraumatic Stress Disorder (CPTSD). As the evidence regarding the treatment of CPTSD... Read More about The role of negative cognitions, emotion regulation strategies, and attachment style in complex post-traumatic stress disorder: Implications for new and existing therapies.

Invasive clinical intervention education for social care support workers of adults: a review of the current literature. (2017)
Journal Article
Hoyle, L., Brown, M., Donaldson, J., & Karatzias, T. (2017). Invasive clinical intervention education for social care support workers of adults: a review of the current literature. Journal of Policy and Practice in Intellectual Disabilities, 14(3), 240-250. https://doi.org/10.1111/jppi.12211

Background: As with the general population, people with intellectual disabilities are ageing, are living longer often with co-existing complex needs and with more requiring care and support. The focus of care is community-based rather than instituti... Read More about Invasive clinical intervention education for social care support workers of adults: a review of the current literature..

Validation of post-traumatic stress disorder (PTSD) and complex PTSD using the International Trauma Questionnaire (2017)
Journal Article
Hyland, P., Shevlin, M., Brewin, C. R., Cloitre, M., Downes, A. J., Jumbe, S., …Roberts, N. P. (2017). Validation of post-traumatic stress disorder (PTSD) and complex PTSD using the International Trauma Questionnaire. Acta Psychiatrica Scandinavica, 136(3), 313-322. https://doi.org/10.1111/acps.12771

Objective: The 11th version of the International Classification of Diseases (ICD-11) has proposed two related trauma diagnoses: Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). Using a newly developed, disorder-specific measure of PTSD... Read More about Validation of post-traumatic stress disorder (PTSD) and complex PTSD using the International Trauma Questionnaire.

Holistic Needs Assessment in Brain Cancer Patients: A Systematic Review of Available Tools (2017)
Presentation / Conference
Afseth, J., Neubeck, L., Karatzias, T., & Grant, R. (2017, June). Holistic Needs Assessment in Brain Cancer Patients: A Systematic Review of Available Tools. Poster presented at British Neuro Oncology Conference

BACKGROUND: A diagnosis of brain cancer affects nearly 10 000 adults per year in the United Kingdom and has a devastating impact. This is due to the poor prognosis as well as a significant symptom burden, which often includes neurocognitive deficits.... Read More about Holistic Needs Assessment in Brain Cancer Patients: A Systematic Review of Available Tools.

Multiple traumatic experiences, post-traumatic stress disorder and offending behaviour in female prisoners (2017)
Journal Article
Mirza, K., Conway, L., Karatzias, T., Power, K., Woolston, C., Apurva, P., …Purdie, A. (2018). Multiple traumatic experiences, post-traumatic stress disorder and offending behaviour in female prisoners. Criminal Behaviour and Mental Health, 28(1), 72-84. https://doi.org/10.1002/cbm.2043

Background Although Q4 it is well established that prisoners commonly have histories of childhood trauma, little is known about mediators between exposure to trauma and criminal behaviour. Hypotheses We hypothesised that the experience of trauma in a... Read More about Multiple traumatic experiences, post-traumatic stress disorder and offending behaviour in female prisoners.

Therapeutic Change in Group Therapy For Interpersonal Trauma: A Relational Framework for Research and Clinical Practice (2017)
Journal Article
Chouliara, Z., Karatzias, T., Gullone, A., Ferguson, S., Cosgrove, K., & Burke Draucker, C. (2020). Therapeutic Change in Group Therapy For Interpersonal Trauma: A Relational Framework for Research and Clinical Practice. Journal of Interpersonal Violence, 35(15-16), 2897-2916. https://doi.org/10.1177/0886260517696860

Our understanding of therapeutic change processes in group therapy for complex interpersonal trauma has been limited. The present study aimed at addressing this gap by developing a framework of therapeutic change in this field from a survivor and the... Read More about Therapeutic Change in Group Therapy For Interpersonal Trauma: A Relational Framework for Research and Clinical Practice.

The Determinants of Well-being among Polish Economic Immigrants. Testing The Sustainable Happiness Model in Migrant Population (2017)
Journal Article
Bak-Klimek, A., Karatzias, T., Elliott, L., & MacLean, R. (2018). The Determinants of Well-being among Polish Economic Immigrants. Testing The Sustainable Happiness Model in Migrant Population. Journal of Happiness Studies, 19, 1565–1588. https://doi.org/10.1007/s10902-017-9877-7

Economic migration has increased dramatically over the past decades, yet, still little is known about the well-being of economic migrants. Most studies focus on the poor mental health of migrants. The few studies that examine well-being do not includ... Read More about The Determinants of Well-being among Polish Economic Immigrants. Testing The Sustainable Happiness Model in Migrant Population.

An international multi-site, randomized controlled trial of a mindfulness-based psychoeducation group programme for people with schizophrenia (2017)
Journal Article
Chien, W. T., Bressington, D., Yip, A., & Karatzias, T. (2017). An international multi-site, randomized controlled trial of a mindfulness-based psychoeducation group programme for people with schizophrenia. Psychological Medicine, 47(12), 2081-2096. https://doi.org/10.1017/s0033291717000526

Background We aimed to test a mindfulness-based psycho-education group (MBPEG), versus conventional psycho-education group (CPEG) versus treatment-as-usual (TAU), in patients with schizophrenia-spectrum disorders over a 24-month follow-up. Methods... Read More about An international multi-site, randomized controlled trial of a mindfulness-based psychoeducation group programme for people with schizophrenia.

Improving diabetes care for people with intellectual disabilities: a qualitative study exploring the perceptions and experiences of professionals in diabetes and intellectual disability services: Improving diabetes care for people with intellectual disabilities (2017)
Journal Article
Brown, M., Taggart, L., Karatzias, T., Truesdale, M., Walley, R., Northway, R., …Davies, M. (2017). Improving diabetes care for people with intellectual disabilities: a qualitative study exploring the perceptions and experiences of professionals in diabetes and intellectual disability services: Improving diabetes care for people with intellectual disabilities. Journal of Intellectual Disability Research, 61(5), 435-449. https://doi.org/10.1111/jir.12369

Background: Globally diabetes is increasing with concerns about the impact on outcomes, including premature death and the costs associated with managing the condition. Research indicates that adults with intellectual disabilities (ID) are 2-3 times m... Read More about Improving diabetes care for people with intellectual disabilities: a qualitative study exploring the perceptions and experiences of professionals in diabetes and intellectual disability services: Improving diabetes care for people with intellectual disabilities.

Examining the Disconnect Between Psychometric Models and Clinical Reality of Posttraumatic Stress Disorder (2017)
Journal Article
Shevlin, M., Hyland, P., Karatzias, T., Bisson, J. I., & Roberts, N. P. (2017). Examining the Disconnect Between Psychometric Models and Clinical Reality of Posttraumatic Stress Disorder. Journal of Anxiety Disorders, 47, 54-59

There have been many factor analytic studies aimed at testing alternative latent structures of DSM-IV and DSM-5 posttraumatic stress disorder (PTSD) symptoms. The primary rationale for such studies is that determining the ‘best’ factor analytic model... Read More about Examining the Disconnect Between Psychometric Models and Clinical Reality of Posttraumatic Stress Disorder.

Improving vision awareness in autism services: Evaluation of a dedicated education programme for support practitioners (2017)
Journal Article
Long, J. J., Butchart, M., Brown, M., Bain, J., McMillan, A., & Karatzias, T. (2018). Improving vision awareness in autism services: Evaluation of a dedicated education programme for support practitioners. Journal of Applied Research in Intellectual Disabilities, 31(2), e244-e252. https://doi.org/10.1111/jar.12330

Background: The research reported here sought to evaluate whether a dedicated education programme in vision awareness improved the knowledge and skills of autism support practitioners in identifying visual impairment in autistic people with intellect... Read More about Improving vision awareness in autism services: Evaluation of a dedicated education programme for support practitioners.

Alternative models of disorders of traumatic stress based on the new ICD-11 proposals (2017)
Journal Article
Shevlin, M., Hyland, P., Karatzias, T., Fyvie, C., Roberts, N., Bisson, J. I., …Cloitre, M. (2017). Alternative models of disorders of traumatic stress based on the new ICD-11 proposals. Acta Psychiatrica Scandinavica, 135(5), 419-428. https://doi.org/10.1111/acps.12695

Objective Although there is emerging evidence for the factorial validity of the distinction between Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) proposed in ICD-11, such evidence has been predominantly based on using selected items f... Read More about Alternative models of disorders of traumatic stress based on the new ICD-11 proposals.

Autism and Visual Impairment: a Review of the Literature (2017)
Journal Article
Butchart, M., Long, J. J., Brown, M., McMillan, A., Bain, J., & Karatzias, T. (2017). Autism and Visual Impairment: a Review of the Literature. Review Journal of Autism and Developmental Disorders, 4(2), 118-131. https://doi.org/10.1007/s40489-016-0101-1

Purpose This review presents the evidence on the prevalence of visual impairments in children and adults with Autism Spectrum Disorder (ASD), and the similar behavioural traits associated with both visual impairment and autism. Method A systemat... Read More about Autism and Visual Impairment: a Review of the Literature.

Childhood Abuse and Current Intimate Partner Violence: A Population Study in Hong Kong (2016)
Journal Article
Yan, E., & Karatzias, T. (2020). Childhood Abuse and Current Intimate Partner Violence: A Population Study in Hong Kong. Journal of Interpersonal Violence, 35(1-2), 233-251. https://doi.org/10.1177/0886260516682521

Previous studies have established that childhood violence victimization is associated with current experience of intimate partner violence (IPV). Existing literature, however, focused exclusively on female survivors and physical IPV and relied on non... Read More about Childhood Abuse and Current Intimate Partner Violence: A Population Study in Hong Kong.

A randomized controlled trial of a mindfulness-based intervention program for people with schizophrenia: 6-month follow-up (2016)
Journal Article
Wang, L., Chien, W. T., Yip, L. K., & Karatzias, T. (2016). A randomized controlled trial of a mindfulness-based intervention program for people with schizophrenia: 6-month follow-up. Neuropsychiatric Disease and Treatment, 12, 3097-3110. https://doi.org/10.2147/ndt.s123239

Mindfulness-based interventions have been increasingly evidenced to be effective in different mental illnesses but limited in schizophrenia. This single-blind, multisite randomized controlled trial tested the effects of a mindfulness-based psychoeduc... Read More about A randomized controlled trial of a mindfulness-based intervention program for people with schizophrenia: 6-month follow-up.

Organic vs. functional neurological disorders: The role of childhood psychological trauma (2016)
Journal Article
Karatzias, T., Howard, R., Power, K., Socherel, F., Heath, C., & Livingstone, A. (2017). Organic vs. functional neurological disorders: The role of childhood psychological trauma. Child Abuse and Neglect, 63, 1-6. https://doi.org/10.1016/j.chiabu.2016.11.011

Although the relationship between psychological trauma and medically unexplained symptoms (MUS) is well established, this relationship is less well understood in people with medically unexplained neurological symptoms. In the present study, we set ou... Read More about Organic vs. functional neurological disorders: The role of childhood psychological trauma.

From Childhood Trauma to Self-Harm: An Investigation of Theoretical Pathways among Female Prisoners: Childhood Trauma and Self-Harm in Female Prisoners (2016)
Journal Article
Howard, R., Karatzias, T., Power, K., & Mahoney, A. (2017). From Childhood Trauma to Self-Harm: An Investigation of Theoretical Pathways among Female Prisoners: Childhood Trauma and Self-Harm in Female Prisoners. Clinical Psychology and Psychotherapy, 24(4), 942-951. https://doi.org/10.1002/cpp.2058

Despite empirical evidence suggesting complex associations between childhood trauma and self-harm, there is a dearth of research investigating this association in the female prison population. The current study explored pathways to self-harm followin... Read More about From Childhood Trauma to Self-Harm: An Investigation of Theoretical Pathways among Female Prisoners: Childhood Trauma and Self-Harm in Female Prisoners.

Depression and resilience mediate the relationship between traumatic life events and ill physical health: results from a population study (2016)
Journal Article
Karatzias, T., Jowett, S., Yan, E., Raeside, R., & Howard, R. (2016). Depression and resilience mediate the relationship between traumatic life events and ill physical health: results from a population study. Psychology, Health and Medicine, 22(9), 1021-1031. https://doi.org/10.1080/13548506.2016.1257814

We set out to investigate the mediating roles of depression, resilience, smoking, and alcohol use, in the relationship between potentially traumatic life events and objective and subjective, physical and mental health in a single study. A face-to-fac... Read More about Depression and resilience mediate the relationship between traumatic life events and ill physical health: results from a population study.

Posttraumatic stress disorder (PTSD) symptoms mediate the relationship between substance misuse and violent offending among female prisoners (2016)
Journal Article
Howard, R., Karatzias, T., Power, K., & Mahoney, A. (2017). Posttraumatic stress disorder (PTSD) symptoms mediate the relationship between substance misuse and violent offending among female prisoners. Social Psychiatry and Psychiatric Epidemiology, 52(1), 21-25. https://doi.org/10.1007/s00127-016-1293-5

Purpose Despite empirical evidence suggesting complex associations between psychological trauma, substance misuse, and violent offending, there is a dearth of research investigating these associations in the female prison population. Methods A cro... Read More about Posttraumatic stress disorder (PTSD) symptoms mediate the relationship between substance misuse and violent offending among female prisoners.

An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity (2016)
Journal Article
Karatzias, T., Cloitre, M., Brewin, C. R., Bisson, J. I., Roberts, N., Wilson, D., …Shevlin, M. (2016). An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity. Journal of Anxiety Disorders, 44, 73-79. https://doi.org/10.1016/j.janxdis.2016.10.009

Among the conditions following exposure to traumatic life events proposed by ICD-11 are Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). The primary aim of this study was to provide an assessment of the reliability and validity of a new... Read More about An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity.

Evidence of distinct profiles of Posttraumatic Stress Disorder (PTSD) and Complex Posttraumatic Stress Disorder (CPTSD) based on the new ICD-11 Trauma Questionnaire (ICD-TQ) (2016)
Journal Article
Karatzias, T., Shevlin, M., Fyvie, C., Hyland, P., Efthymiadou, E., Wilson, D., …Cloitre, M. (2017). Evidence of distinct profiles of Posttraumatic Stress Disorder (PTSD) and Complex Posttraumatic Stress Disorder (CPTSD) based on the new ICD-11 Trauma Questionnaire (ICD-TQ). Journal of Affective Disorders, 207, 181-187. https://doi.org/10.1016/j.jad.2016.09.032

Background The WHO International Classification of Diseases, 11th version (ICD-11), has proposed two related diagnoses following exposure to traumatic events; Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). We set out to explore whethe... Read More about Evidence of distinct profiles of Posttraumatic Stress Disorder (PTSD) and Complex Posttraumatic Stress Disorder (CPTSD) based on the new ICD-11 Trauma Questionnaire (ICD-TQ).

Early maladaptive schemas in adult survivors of interpersonal trauma: foundations for a cognitive theory of psychopathology (2016)
Journal Article
Karatzias, T., Jowett, S., Begley, A., & Deas, S. (2016). Early maladaptive schemas in adult survivors of interpersonal trauma: foundations for a cognitive theory of psychopathology. European Journal of Psychotraumatology Supplement, 7(1), 30713. https://doi.org/10.3402/ejpt.v7.30713

Background Although the association between psychological trauma and early maladaptive schemas (EMS) is well established in the literature, no study to date has examined the relationship of EMS to PTSD and psychopathologies beyond depression and anx... Read More about Early maladaptive schemas in adult survivors of interpersonal trauma: foundations for a cognitive theory of psychopathology.

Eye movement desensitization and reprocessing (EMDR) for DSM–5 posttraumatic stress disorder (PTSD) in adults with intellectual disabilities: A case study review. (2016)
Journal Article
Jowett, S., Karatzias, T., Brown, M., Grieve, A., Paterson, D., & Walley, R. (2016). Eye movement desensitization and reprocessing (EMDR) for DSM–5 posttraumatic stress disorder (PTSD) in adults with intellectual disabilities: A case study review. Psychological Trauma: Theory, Research, Practice, and Policy, 8(6), 709-719. https://doi.org/10.1037/tra0000101

Objective: People with intellectual disabilities may be at a greater risk for exposure to traumatic events and consequently develop posttraumatic stress disorder (PTSD). Although eye movement desensitization and reprocessing (EMDR) is an established... Read More about Eye movement desensitization and reprocessing (EMDR) for DSM–5 posttraumatic stress disorder (PTSD) in adults with intellectual disabilities: A case study review..

Group psychotherapy for female adult survivors of interpersonal psychological trauma: a preliminary study in Scotland (2016)
Journal Article
Karatzias, T., Ferguson, S., Gullone, A., & Cosgrove, K. (2016). Group psychotherapy for female adult survivors of interpersonal psychological trauma: a preliminary study in Scotland. Journal of Mental Health, 25(6), 512-519. https://doi.org/10.3109/09638237.2016.1139062

Background: There is limited evidence on manualised group interventions that facilitate the development of trauma recovery skills, affect regulation and meaning making for survivors of interpersonal trauma. Aim: The study aimed to provide prelimin... Read More about Group psychotherapy for female adult survivors of interpersonal psychological trauma: a preliminary study in Scotland.

The experiences of family carers in the delivery of invasive clinical interventions for young people with complex intellectual disabilities: policy disconnect or policy opportunity? (2016)
Journal Article
Brown, M., Hoyle, L., & Karatzias, T. (2016). The experiences of family carers in the delivery of invasive clinical interventions for young people with complex intellectual disabilities: policy disconnect or policy opportunity?. Journal of Clinical Nursing, 25(3-4), 534-542. https://doi.org/10.1111/jocn.13090

Aims and objectives To explore the experiences of family carers in the delivery of invasive clinical interventions within community settings. Background Many young people with intellectual disabilities present with complex health needs and require... Read More about The experiences of family carers in the delivery of invasive clinical interventions for young people with complex intellectual disabilities: policy disconnect or policy opportunity?.

Multi-dimensional self-esteem and magnitude of change in the treatment of anorexia nervosa. (2016)
Journal Article
Collin, P., Karatzias, T., Power, K., Howard, R., Grierson, D., & Yellowlees, A. (2016). Multi-dimensional self-esteem and magnitude of change in the treatment of anorexia nervosa. Psychiatry Research, 237, 175-181. https://doi.org/10.1016/j.psychres.2016.01.046

Self-esteem improvement is one of the main targets of inpatient eating disorder programmes. The present study sought to examine multi-dimensional self-esteem and magnitude of change in eating psychopathology among adults participating in a specialist... Read More about Multi-dimensional self-esteem and magnitude of change in the treatment of anorexia nervosa..

Intellectual disabilities among prisoners: prevalence and mental and physical health comorbidities. (2016)
Journal Article
Hellenbach, M., Karatzias, T., & Brown, M. (2017). Intellectual disabilities among prisoners: prevalence and mental and physical health comorbidities. Journal of Applied Research in Intellectual Disabilities, 30(2), 230-241. https://doi.org/10.1111/jar.12234

Background Limited evidence suggests that people with ID (ID) are overrepresented in prisons although prevalence rates of ID among prisoners vary significantly across studies, making it difficult to identify prevalence and assess existing need.... Read More about Intellectual disabilities among prisoners: prevalence and mental and physical health comorbidities..

Diabetes in People with Intellectual Disabilities: A Systematic Review of the Literature. (2015)
Journal Article
MacRae, S., Brown, M., Karatzias, T., Taggart, L., Truesdale-Kennedy, M., Walley, R., …Davies, M. (2015). Diabetes in People with Intellectual Disabilities: A Systematic Review of the Literature. Research in Developmental Disabilities, 47, 352-374. https://doi.org/10.1016/j.ridd.2015.10.003

Objective To present an analysis of the evidence related to the prevalence of diabetes in people with intellectual disabilities (ID), their experiences of their condition and treatment and those of their carers. Materials and methods A syste... Read More about Diabetes in People with Intellectual Disabilities: A Systematic Review of the Literature..

Psychological interventions for women with intellectual disabilities and forensic care needs: a systematic review of the literature (2015)
Journal Article
Hellenbach, M., Brown, M., Karatzias, T., & Robinson, R. (2015). Psychological interventions for women with intellectual disabilities and forensic care needs: a systematic review of the literature. Journal of Intellectual Disability Research, 59, 319-331. https://doi.org/10.1111/jir.12133

Objective Research evidence to date concerning offending by people with intellectual disabilities (ID) has concentrated on male perpetrators and little is known about their female counterparts. This systematic literature review examines evidence o... Read More about Psychological interventions for women with intellectual disabilities and forensic care needs: a systematic review of the literature.

Substance Related Offending Behaviour Programme (SROBP): an exploration of gender responsivity and treatment acceptance issues for female prisoners (2015)
Journal Article
Mahoney, A., Chouliara, Z., & Karatzias, T. (2015). Substance Related Offending Behaviour Programme (SROBP): an exploration of gender responsivity and treatment acceptance issues for female prisoners. Journal of Forensic Psychiatry and Psychology, 26(6), 798-823. https://doi.org/10.1080/14789949.2015.1062993

Substance-related offending poses a considerable problem for society. In response, criminal justice agencies have widely delivered cognitive-behavioural interventions, such as the Substance-Related Offending Behaviour Programme (SROBP), to both male... Read More about Substance Related Offending Behaviour Programme (SROBP): an exploration of gender responsivity and treatment acceptance issues for female prisoners.

A study protocol for a pilot randomised trial of a structured education programme for the self-management of Type 2 diabetes for adults with intellectual disabilities (2015)
Journal Article
Taggart, L., Coates, V., Clarke, M., Bunting, B., Davies, M., Carey, M., …Karatzias, T. (2015). A study protocol for a pilot randomised trial of a structured education programme for the self-management of Type 2 diabetes for adults with intellectual disabilities. Trials, 16, 148. https://doi.org/10.1186/s13063-015-0644-y

Background: The need for structured education programmes for type 2 diabetes is a high priority for many governments around the world. One such national education programme in the United Kingdom is the DESMOND Programme, which has been shown to be ro... Read More about A study protocol for a pilot randomised trial of a structured education programme for the self-management of Type 2 diabetes for adults with intellectual disabilities.

Adverse life events and health: A population study in Hong Kong (2015)
Journal Article
Karatzias, T., Yan, E., & Jowett, S. (2015). Adverse life events and health: A population study in Hong Kong. Journal of Psychosomatic Research, 78(2), 173-177. https://doi.org/10.1016/j.jpsychores.2014.11.024

Objective: Although the effects of adverse life events on mental health have been well documented in the literature, there has never been a population based study that investigated systematically the association between history of adverse life even... Read More about Adverse life events and health: A population study in Hong Kong.

Effectiveness and Acceptability of Group Psychoeducation for the Management of Mental Health Problems in Survivors of Child Sexual Abuse (CSA) (2014)
Journal Article
Karatzias, T., Ferguson, S., Chouliara, Z., Gullone, A., Cosgrove, K., & Douglas, A. (2014). Effectiveness and Acceptability of Group Psychoeducation for the Management of Mental Health Problems in Survivors of Child Sexual Abuse (CSA). International Journal of Group Psychotherapy, 64(4), 492-514. https://doi.org/10.1521/ijgp.2014.64.4.492

There has been limited published research on the effectiveness of manualized psychoeducational approaches for the mental health and behavioral problems of child sexual abuse (CSA) survivors. The present study aims to add to the evidence base for the... Read More about Effectiveness and Acceptability of Group Psychoeducation for the Management of Mental Health Problems in Survivors of Child Sexual Abuse (CSA).

Diabetes (2014)
Book Chapter
Taggart, L., Brown, M., & Karatzias, T. (2014). Diabetes. In L. Taggart, & W. Cousins (Eds.), Health Promotion for People with Intellectual and Developmental Disabilities (69-76). Open University Press

Pain in people with chronic fatigue syndrome/myalgic encephalomyelitis: The role of traumatic stress and coping strategies (2014)
Journal Article
Krzeczkowska, A., Karatzias, T., & Dickson, A. (2015). Pain in people with chronic fatigue syndrome/myalgic encephalomyelitis: The role of traumatic stress and coping strategies. Psychology, Health and Medicine, 20(2), 210-216. https://doi.org/10.1080/13548506.2014.951370

Pain is a significant problem for many people with chronic fatigue syndrome (CFS)/myalgic encephalomyelitis (ME). This exploratory study investigated the extent to which severity of pain was related to coping strategies and post-traumatic symptomatol... Read More about Pain in people with chronic fatigue syndrome/myalgic encephalomyelitis: The role of traumatic stress and coping strategies.

Emotions and emotion regulation in survivors of childhood sexual abuse: the importance of “disgust” in traumatic stress and psychopathology (2014)
Journal Article
Coyle, E., Karatzias, T., Summers, A., & Power, M. (2014). Emotions and emotion regulation in survivors of childhood sexual abuse: the importance of “disgust” in traumatic stress and psychopathology. European Journal of Psychotraumatology, 5(1), Article 23306. https://doi.org/10.3402/ejpt.v5.23306

Background Childhood sexual abuse (CSA) has the potential to compromise socio-emotional development of the survivor resulting in increased vulnerability to difficulties regulating emotions. In turn, emotion regulation is thought to play a key part i... Read More about Emotions and emotion regulation in survivors of childhood sexual abuse: the importance of “disgust” in traumatic stress and psychopathology.

The Determinants of Well-Being Among International Economic Immigrants: A Systematic Literature Review and Meta-Analysis (2014)
Journal Article
Bak-Klimek, A., Karatzias, T., Elliott, L., & Maclean, R. (2015). The Determinants of Well-Being Among International Economic Immigrants: A Systematic Literature Review and Meta-Analysis. Applied research in quality of life, 10(1), 161-188. https://doi.org/10.1007/s11482-013-9297-8

Over the past decades migration has increased dramatically. Most of the scientific literature on immigrant mental health has focussed on stress, distress and mental illness. Less attention has been paid to positive aspects in particular mental well-b... Read More about The Determinants of Well-Being Among International Economic Immigrants: A Systematic Literature Review and Meta-Analysis.

Interpersonal trauma in female offenders : a new, brief, psycho-educational intervention in a community based setting. (2013)
Journal Article
Ball, S., Karatzias, T., Mahoney, A., Ferguson, S., & Pate, K. (2013). Interpersonal trauma in female offenders : a new, brief, psycho-educational intervention in a community based setting. Journal of Forensic Psychiatry and Psychology, 24, 795-802. https://doi.org/10.1080/14789949.2013.852233

Background: High prevalence rates of interpersonal violence and abuse histories in female offenders have been well documented in the literature. However, the evidence base on the effectiveness of such interventions remains rather limited. Objective:... Read More about Interpersonal trauma in female offenders : a new, brief, psycho-educational intervention in a community based setting..

The health role of local area coordinators in Scotland: A mixed methods study. (2013)
Journal Article
Brown, M., Karatzias, T., & O'Leary, L. (2013). The health role of local area coordinators in Scotland: A mixed methods study. Journal of Intellectual Disabilities, 17, 387-402. https://doi.org/10.1177/1744629513509795

The study set out to explore whether local area coordinators (LACs) and their managers view the health role of LACs as an essential component of their work and identify the health-related activities undertaken by LACs in Scotland. A mixed methods cro... Read More about The health role of local area coordinators in Scotland: A mixed methods study..

Acts of Recovery: moving on from childhood abuse. (2013)
Report
Chouliara, Z., Karatzias, T., & Gullone, A. (2012). Acts of Recovery: moving on from childhood abuse. Edinburgh, Scotland: Scottish recovery

Evidence-based, survivor-centred self-help booklet for survivors of childhood abuse.

Recovering from childhood sexual abuse: a theoretical framework for practice and research. (2013)
Journal Article
Chouliara, Z., Karatzias, T., & Gullone, A. (2013). Recovering from childhood sexual abuse: a theoretical framework for practice and research. Journal of Psychiatric and Mental Health Nursing, 21, 69-78. https://doi.org/10.1111/jpm.12048

Research on survivors' experiences of recovering from childhood sexual abuse (CSA) has been limited and focused on those with severe mental health difficulties. This study elicited experiences of recovery from CSA in male and female survivors who hav... Read More about Recovering from childhood sexual abuse: a theoretical framework for practice and research..

Life satisfaction in people with post-traumatic stress disorder. (2013)
Journal Article
Karatzias, T., Chouliara, Z., Power, K., Brown, K., Begum, M., McGoldrick, T., & MacLean, R. (2013). Life satisfaction in people with post-traumatic stress disorder. Journal of Mental Health, 22, 501-508. https://doi.org/10.3109/09638237.2013.819418

Background/Aims There is limited research on the association between post-traumatic stress disorder (PTSD) and life satisfaction in community samples. We set out to investigate levels of life satisfaction and its demographic, trauma related and... Read More about Life satisfaction in people with post-traumatic stress disorder..

Nature of child sexual abuse and psychopathology in adult survivors : results from a clinical sample in Scotland. (2013)
Journal Article
Bak-Klimek, A., Karatzias, T., Campbell, J., Pugh, R., Laybourn, P., & Elliott, L. (2014). Nature of child sexual abuse and psychopathology in adult survivors : results from a clinical sample in Scotland. Journal of Psychiatric and Mental Health Nursing, 21, 550-557. https://doi.org/10.1111/jpm.12127

The relationship between history of childhood sexual abuse and psychopathology in adult life is well established. However, understanding of the mechanisms by which abuse exerts its effects is limited. To our knowledge, this is the first study which i... Read More about Nature of child sexual abuse and psychopathology in adult survivors : results from a clinical sample in Scotland..

Acts of recovery: moving on from childhood abuse. (Easy read version) (2012)
Report
Chouliara, Z., Karatzias, T., Gullone, A., & Duncan, E. (2011). Acts of recovery: moving on from childhood abuse. (Easy read version). Edinburgh, Scotland: NHS LOthian

The booklet has also been adjusted for survivors of childhood abuse who have learning difficulties in collaboration with Eileen Duncan, Project Manager for Health Inequalities with NHS Lothian. This version has been endorsed and is currently being us... Read More about Acts of recovery: moving on from childhood abuse. (Easy read version).

Adult survivors' of childhood sexual abuse perspectives of services: a systematic review (2012)
Journal Article
Chouliara, Z., Karatzias, T., Scott-Brien, G., Macdonald, A., MacArthur, J., & Frazer, N. (2012). Adult survivors' of childhood sexual abuse perspectives of services: a systematic review. Counselling and Psychotherapy Research, 12, 146-161. https://doi.org/10.1080/14733145.2012.656136

Aims: This review summarises and evaluates evidence regarding psychotherapy/counselling services for childhood sexual abuse (CSA) from the survivors' perspective. Methods: Studies were identified from systematic literature searches of PubMed, PsycINF... Read More about Adult survivors' of childhood sexual abuse perspectives of services: a systematic review.

Violent female offending : an exploration of repeat and one-time offending (2012)
Journal Article
Mahoney, A. L., & Karatzias, T. (2012). Violent female offending : an exploration of repeat and one-time offending. International Journal of Forensic Mental Health, 11, 191-202. https://doi.org/10.1080/14999013.2012.723664

There has been an increased focus on understanding the factors that may be predictive of violent recidivism among female offenders. Previous research has indicated that repeat and one-time violent female offenders have very different profiles. All fe... Read More about Violent female offending : an exploration of repeat and one-time offending.

A review of the literature relating to psychological interventions and people with intellectual disabilities: Issues for research, policy, education and clinical practice (2011)
Journal Article
Brown, M., Duff, H., Karatzias, T., & Horsburgh, D. (2011). A review of the literature relating to psychological interventions and people with intellectual disabilities: Issues for research, policy, education and clinical practice. Journal of Intellectual Disabilities, 15, 31-45. https://doi.org/10.1177/1744629511401166

The aim of this review is to identify and analyse the published evidence base and wider literature in relation to psychological interventions for adults with intellectual disabilities. The review suggests that the evidence base regarding psychologica... Read More about A review of the literature relating to psychological interventions and people with intellectual disabilities: Issues for research, policy, education and clinical practice.

Talking Therapy Services for Adult Survivors of Childhood Sexual Abuse (CSA) in Scotland: Perspectives of Service Users and Professionals (2011)
Journal Article
Chouliara, Z., Karatzias, T., Scott-Brien, G., Macdonald, A., MacArthur, J., & Frazer, N. (2011). Talking Therapy Services for Adult Survivors of Childhood Sexual Abuse (CSA) in Scotland: Perspectives of Service Users and Professionals. Journal of Child Sexual Abuse, 20, 128-156. https://doi.org/10.1080/10538712.2011.554340

This study aimed to elicit perceptions and experiences of talking therapy services for CSA survivors and professionals utilizing qualitative interviews and analyzing transcripts using Interpretative Phenomenological Analysis. Participants included 13... Read More about Talking Therapy Services for Adult Survivors of Childhood Sexual Abuse (CSA) in Scotland: Perspectives of Service Users and Professionals.

Predicting outcome of face-to-face and telephone counselling for occupational stress (2011)
Journal Article
Karatzias, T., Chouliara, Z., Power, K., & Kilfedder, C. (2011). Predicting outcome of face-to-face and telephone counselling for occupational stress. British Journal of Guidance and Counselling, 39, 197-208. https://doi.org/10.1080/03069885.2011.552599

The aim of the present study was to investigate predictors of outcome of counselling, using mean change scores of three outcome measures, at treatment completion and at 4-months follow-up, in a randomised trial of face-to-face (n=30) versus telephone... Read More about Predicting outcome of face-to-face and telephone counselling for occupational stress.

A Controlled Comparison of the Effectiveness and Efficiency of Two Psychological Therapies for Posttraumatic Stress Disorder: Eye Movement Desensitization and Reprocessing vs. Emotional Freedom Techniques (2011)
Journal Article
Karatzias, T., Power, K., Brown, K., McGoldrick, T., Begum, M., Young, J., …Adams, S. (2011). A Controlled Comparison of the Effectiveness and Efficiency of Two Psychological Therapies for Posttraumatic Stress Disorder: Eye Movement Desensitization and Reprocessing vs. Emotional Freedom Techniques. Journal of Nervous and Mental Disease, 199(6), 372-378. https://doi.org/10.1097/nmd.0b013e31821cd262

The present study reports on the first ever controlled comparison between eye movement desensitization and reprocessing (EMDR) and emotional freedom techniques (EFT) for posttraumatic stress disorder. A total of 46 participants were randomized to eit... Read More about A Controlled Comparison of the Effectiveness and Efficiency of Two Psychological Therapies for Posttraumatic Stress Disorder: Eye Movement Desensitization and Reprocessing vs. Emotional Freedom Techniques.

The effectiveness of, and predictors of response to, inpatient treatment of anorexia nervosa (2010)
Journal Article
Collin, P., Power, K., Karatzias, T., Grierson, D., & Yellowlees, A. (2010). The effectiveness of, and predictors of response to, inpatient treatment of anorexia nervosa. European Eating Disorders Review, 18, 464-474. https://doi.org/10.1002/erv.1026

Objective The inpatient treatment of anorexia nervosa lacks a clear evidence base. We sought to determine the effectiveness of, and predictors of response to, a specialist inpatient programme for adults with anorexia nervosa, and to survey satisfact... Read More about The effectiveness of, and predictors of response to, inpatient treatment of anorexia nervosa.

General psychopathology in anorexia nervosa: the role of psychosocial factors (2010)
Journal Article
Karatzias, T., Chouliara, Z., Power, K., Collin, P., Yellowlees, A., & Grierson, D. (2010). General psychopathology in anorexia nervosa: the role of psychosocial factors. Clinical Psychology and Psychotherapy, 17, 519-527. https://doi.org/10.1002/cpp.701

The aim of the present study was to investigate psychosocial correlates of comorbid psychopathology. Data were collected from a total of 90 female inpatients with anorexia nervosa (AN). Higher levels of general psychopathology were detected in depres... Read More about General psychopathology in anorexia nervosa: the role of psychosocial factors.

A randomized trial of face-to-face counselling versus telephone counselling versus bibliotherapy for occupational stress (2010)
Journal Article
Kilfedder, C., Power, K., Karatzias, T., McCafferty, A., Niven, K., Chouliara, Z., …Sharp, S. (2010). A randomized trial of face-to-face counselling versus telephone counselling versus bibliotherapy for occupational stress. Psychology and Psychotherapy: Theory, Research and Practice, 83, 223-242. https://doi.org/10.1348/147608309X476348

Objective. The aim of the present study was to compare the effectiveness and acceptability of three interventions for occupational stress. Methods/design. A total of 90 National Health Service employees were randomized to face-to-face counselling... Read More about A randomized trial of face-to-face counselling versus telephone counselling versus bibliotherapy for occupational stress.

Posttraumatic Symptomatology and Dissociation in Outpatients with Chronic Posttraumatic Stress Disorder (2010)
Journal Article
Karatzias, T., Power, K., Brown, K., & McGoldrick, T. (2010). Posttraumatic Symptomatology and Dissociation in Outpatients with Chronic Posttraumatic Stress Disorder. Journal of Trauma and Dissociation, 11(1), 83-92. https://doi.org/10.1080/15299730903143667

A number of studies have concluded that dissociative features are common in patients with posttraumatic stress disorder (PTSD). The present study aimed to investigate correlates of dissociation in outpatients with chronic PTSD in Scotland. For the... Read More about Posttraumatic Symptomatology and Dissociation in Outpatients with Chronic Posttraumatic Stress Disorder.

Views and experiences of young women about chlamydia in Scotland: Knowledge, condom use and access to health services. (2009)
Journal Article
Chouliara, Z., Karatzias, T., Dey, L., & Goulbourne, A. (2009). Views and experiences of young women about chlamydia in Scotland: Knowledge, condom use and access to health services. Health Psychology Update, 18, 14-24

The study aimed to elicit perceptions of and awareness about chlamydia, views and experiences of condom use as protection against a chlamydia infection and of access to sexual health services. This qualitative study utilised semi-structured individ... Read More about Views and experiences of young women about chlamydia in Scotland: Knowledge, condom use and access to health services..

Vividness of mental imagery in Posttraumatic Stress Disorder (PTSD): The role of depression (2009)
Journal Article
Karatzias, T., Power, K., Brown, K., & McGoldrick, T. (2009). Vividness of mental imagery in Posttraumatic Stress Disorder (PTSD): The role of depression. Journal of Behavior Therapy and Experimental Psychiatry, 40(2), 352-358. https://doi.org/10.1016/j.jbtep.2009.02.002

The present study aimed to investigate demographics, trauma variables, PTSD symptomatology, co-morbid psychopathology, dissociation and personality variables as correlates of vividness of imagery (i.e. general ability to imagine objects) in people wi... Read More about Vividness of mental imagery in Posttraumatic Stress Disorder (PTSD): The role of depression.

Proposing a New Model of Poor Physical Health Following Psychological Trauma: The Ehlers-Clark Model and Beyond. (2009)
Journal Article
Karatzias, T., & Chouliara, Z. (2009). Proposing a New Model of Poor Physical Health Following Psychological Trauma: The Ehlers-Clark Model and Beyond. Medical Hypotheses, 72, 444-447. doi:10.1016/j.mehy.2008.10.026

Previous literature suggests that posttraumatic stress disorder (PSTD) is associated with poor physical health. To date a number of existing hypotheses have been developed to explain this association focusing predominantly on the interplay between co... Read More about Proposing a New Model of Poor Physical Health Following Psychological Trauma: The Ehlers-Clark Model and Beyond..

Vicarious traumatisation in practitioners who work with adult survivors of sexual violence and child sexual abuse: Literature review and directions for future research (2009)
Journal Article
Chouliara, Z., Hutchison, C., & Karatzias, T. (2009). Vicarious traumatisation in practitioners who work with adult survivors of sexual violence and child sexual abuse: Literature review and directions for future research. Counselling and Psychotherapy Research, 9(1), 47-56. https://doi.org/10.1080/14733140802656479

Primary objective: The authors sought to summarise and evaluate evidence regarding vicarious traumatisation (VT) in practitioners working with adult survivors of sexual violence and/or child sexual abuse (CSA). Methods and selection criteria: Relev... Read More about Vicarious traumatisation in practitioners who work with adult survivors of sexual violence and child sexual abuse: Literature review and directions for future research.

Cognitive appraisals and physical health in people with posttraumatic stress disorder (PTSD) (2009)
Journal Article
Karatzias, T., & Chouliara, Z. (2009). Cognitive appraisals and physical health in people with posttraumatic stress disorder (PTSD). Medical Hypotheses, 72(4), 444-447. https://doi.org/10.1016/j.mehy.2008.10.026

Previous literature suggests that posttraumatic stress disorder (PSTD) is associated with poor physical health. To date a number of existing hypotheses have been developed to explain this association focusing predominantly on the interplay between co... Read More about Cognitive appraisals and physical health in people with posttraumatic stress disorder (PTSD).

The use of seclusion in learning disability services. (2008)
Journal Article
Powell, H., Alexander, A., & Karatzias, T. (2008). The use of seclusion in learning disability services. Learning Disability Practice, 11, 12-16

Seclusion is commonly used in learning disability health services, despite the lack of demonstrated effectiveness. This article reviews the use of seclusion in learning disability services. As relevant literature was limited, literature from the men... Read More about The use of seclusion in learning disability services..

Post-traumatic symptomatology in parents with premature infants: a systematic review of the literature. (2007)
Journal Article
Karatzias, T., Chouliara, Z., Maxton, F., Freer, Y., & Power, K. (2007). Post-traumatic symptomatology in parents with premature infants: a systematic review of the literature. Journal of Prenatal and Perinatal Psychology and Health, 21, 249-261

The emotional distress resulting from the experience of giving birth to a preterm infant (gestational age , 37 weeks) and the subsequent neonatal unit hospitalisation may be a traumatic experience for parents. In the present systematic literature... Read More about Post-traumatic symptomatology in parents with premature infants: a systematic review of the literature..

Illness appraisals and self-esteem as correlates of anxiety and affective comorbid disorders in schizophrenia (2007)
Journal Article
Karatzias, T., Gumley, A., Power, K., & O'Grady, M. (2007). Illness appraisals and self-esteem as correlates of anxiety and affective comorbid disorders in schizophrenia. Comprehensive Psychiatry, 48(4), 371-375. https://doi.org/10.1016/j.comppsych.2007.02.005

Comorbidity of anxiety and affective disorders in people with a diagnosis of schizophrenia is common. This study investigated the hypothesis that greater negative beliefs about illness and lower self-esteem will be significantly associated with the p... Read More about Illness appraisals and self-esteem as correlates of anxiety and affective comorbid disorders in schizophrenia.

Predicting treatment outcome on three measures for post-traumatic stress disorder (2006)
Journal Article
Karatzias, A., Power, K., McGoldrick, T., Brown, K., Buchanan, R., Sharp, D., & Swanson, V. (2007). Predicting treatment outcome on three measures for post-traumatic stress disorder. European Archives of Psychiatry and Clinical Neuroscience, 257(1), 40-46. https://doi.org/10.1007/s00406-006-0682-2

The aim of the present study was to investigate predictors of treatment outcome for Posttraumatic Stress Disorder (PTSD) after treatment completion and at 15-months follow-up (n = 48), in a trial of Eye Movement Desensitisation and Reprocessing (EMDR... Read More about Predicting treatment outcome on three measures for post-traumatic stress disorder.

Early intervention for relapse in schizophrenia: Impact of cognitive behavioural therapy on negative beliefs about psychosis and self-esteem (2006)
Journal Article
Gumley, A., Karatzias, A., Power, K., Reilly, J., McNay, L., & O'Grady, M. (2006). Early intervention for relapse in schizophrenia: Impact of cognitive behavioural therapy on negative beliefs about psychosis and self-esteem. British Journal of Clinical Psychology, 45(2), 247-260. https://doi.org/10.1348/014466505x49925

Objectives. The study aimed to test two hypotheses. Firstly, that participants who relapsed during the 12-month follow-up period of our randomized controlled trial, would show increased negative beliefs about their illness and reduced self-esteem, in... Read More about Early intervention for relapse in schizophrenia: Impact of cognitive behavioural therapy on negative beliefs about psychosis and self-esteem.

A controlled comparison of eye movement desensitization and reprocessing versus exposure plus cognitive restructuring versus waiting list in the treatment of post-traumatic stress disorder. (2002)
Journal Article
Power, K., McGoldrick, T., Brown, K., Buchanan, R., Sharp, D., Swanson, V., & Karatzias, T. (2002). A controlled comparison of eye movement desensitization and reprocessing versus exposure plus cognitive restructuring versus waiting list in the treatment of post-traumatic stress disorder. Clinical Psychology and Psychotherapy, 9, 299-318. https://doi.org/10.1002/cpp.341

A total of 105 patients with post-traumatic stress disorder (PTSD) were randomly allocated to eye-movement desensitization and reprocessing (EMDR) (n = 39) versus exposure plus cognitive restructuring (E + CR) (n = 37) versus waiting list (WL) (n = 2... Read More about A controlled comparison of eye movement desensitization and reprocessing versus exposure plus cognitive restructuring versus waiting list in the treatment of post-traumatic stress disorder..