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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. (2024). 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, 6(2), 79-90. 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.

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., Suliman, S., Spies, G., Ahmadi, K., Capezzani, L., Carletto, S., Karatzias, T., Kullack, C., Laugharne, J., Lee, C. W., Nijdam, M. J., Olff, M., Ostacoli, L., Seedat, S., & Sijbrandij, M. (2024). EMDR v. other psychological therapies for PTSD: a systematic review and individual participant data meta-analysis. Psychological Medicine, 54(8), 1580-1588. 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., Sadler, E., Lupattelli Gencarelli, B., Taylor, V., McAllister, P., & 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., Bisson, J. I., Roberts, N. P., Shevlin, 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., Eoin, M., Maria Louison, V., Boris, L., Ben-Ezra, M., & 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., Redican, E., Louison Vang, M., Cloitre, M., Ho, G. W., Lorberg, B., & Martsenkovsky, I. (2024). 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, 16(8), 1269–1275. 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.

Change in child mental health during the Ukraine war: evidence from a large sample of parents (2023)
Journal Article
McElroy, E., Hyland, P., Shevlin, M., Karatzias, T., Vallières, F., Ben-Ezra, M., Vang, M. L., Lorberg, B., & Martsenkovskyi, D. (2024). Change in child mental health during the Ukraine war: evidence from a large sample of parents. European Child and Adolescent Psychiatry, 33(5), 1495-1502. https://doi.org/10.1007/s00787-023-02255-z

The ongoing war in Ukraine is expected to negatively impact the mental health of the country’s population. This study aims to provide a preliminary estimate of the degree of change in the mental health problems of Ukrainian children following Russia’... Read More about Change in child mental health during the Ukraine war: evidence from a large sample of parents.

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., Vikram, A., Saddington, D., McCann, A., Burke, J., Eliasson, E., Harper, S., Karatzias, T., Taylor, P. J., Watson, A., Dougall, N., Stavert, J., O’Rourke, S., Glasgow, A., Murphy, R., …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., Redican, E., Cloitre, M., Lorberg, B., Hyland, P., & 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.-I., 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.