All Outputs (241)

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, Resear

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.

The network structure of ICD-11 complex post-traumatic stress disorder across different traumatic life events (2020)
Journal Article
Karatzias, T., Shevlin, M., Hyland, P., Ben-Ezra, M., Cloitre, M., Owkzarek, M., & McElroy, E. (2020). The network structure of ICD-11 complex post-traumatic stress disorder across different traumatic life events. World Psychiatry, 19(3), 400-401. https:/

Abstract not available.

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,

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: sy

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., Sinclair, M., Ho, G. W. K., McAnee, G., Ford, J. D., & Hyland, P. (2020). Adverse and Benevolent Childhood Experiences in Posttraumatic Stress Disorder (PTSD) and Complex PTSD (

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, Stres

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., Martinez, A., & Vallières, F. (2020). Anxiety and depression in the Republic of Ireland during the COVID-19 pandemic. Acta Psychiatrica Scandinavica, 142(3), 249-256. https:

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., Vallières, F., & Hyland, P. (2020). Posttraumatic stress symptoms and associated comorbidity during the COVID-19 pandemic in Ireland: A population based study. Journal of

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., Murphy, J., & Shevlin, M. (2021). Trauma, PTSD, and Complex PTSD in the Republic of Ireland: Prevalence, service use, comorbidity, and risk factors. Social Psychiatry and Psyc

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

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. htt

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 Med

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/10.1080/15325024.2020.17

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). Europea

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

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(

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 treatmen

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

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 Journa

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.