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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. (in press). 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.

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. (in press). Assessing the validity and reliability of the International Anxiety Questionnaire and the International Depression Questionnaire in two bereaved national samples. Clinical Psychology and Psychotherapy,

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.

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. (in press). 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, 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).

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., Luis Ulloa, J., Arriagada, J., Cloitre, M., …Karatzias, T. (in press). Initial Validation of the International Trauma Questionnaire (ITQ) in a sample of Chilean Adults European Journal of Psychotraumatology. European Journal of Psychotraumatology,

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.

Testing the Latent Structure of ICD-11 Prolonged Grief Disorder (PGD) Symptoms in the UK Adult Population: an Exploratory Structural Equation Modelling (ESEM) Approach (2023)
Journal Article
Shevlin, M., Redican, E., Murphy, J., Hyland, P., & Karatzias, T. (in press). Testing the Latent Structure of ICD-11 Prolonged Grief Disorder (PGD) Symptoms in the UK Adult Population: an Exploratory Structural Equation Modelling (ESEM) Approach. Journal of Traumatic Stress,

The latent structure of ICD-11 Prolonged Grief Disorder (PGD) as measured by the International Prolonged Grief Disorder Scale (IPGDS) was assessed in a large general population sample of bereaved adults from the United Kingdom. Data was derived from... Read More about Testing the Latent Structure of ICD-11 Prolonged Grief Disorder (PGD) Symptoms in the UK Adult Population: an Exploratory Structural Equation Modelling (ESEM) Approach.

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,

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.

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. (in press). Is dissociation a fundamental component of ICD-11 Complex Posttraumatic Stress Disorder?. Journal of Trauma & Dissociation, 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.