All Outputs (251)

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., Boduszek, D., & 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., Maercker, A., Roberts, N. P., & 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., Grandison, G., John, A., Cheyne, H., Fyvie, C., Bisson, J. I., Hibberd, C., Abbott-Smith, S., & 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., Mahat-Shamir, M., & 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., Chen, F. H., Chan, A. C. Y., & 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., Bachem, R., & 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.-I. (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., Hyland, P., Maercker, A., & 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.