All Outputs (251)

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.

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., Levita, L., Bennett, K., McBride, O., Martinez, A. P., Stocks, T. V., Vallières, F., Hyland, P., Karatzias, T., Butter, S., Shevlin, M., Bentall, R. P., & 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., Karatzias, T., MacLachlan, M., McBride, O., Murphy, J., Murphy, D., Spikol, E., & 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., McBride, O., Shevlin, M., Bentall, R. P., Butter, S., Karatzias, T., & 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., McKay, R., Bennett, K. M., Gibson-Miller, J., Levita, L., Mason, L., Martinez, A. P., Stocks, T. V., Vallières, F., Karatzias, T., Valiente, C., Vazquez, C., & 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., Karatzias, T., Bentall, R. P., Martinez, A., & 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., Murphy, J., & 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., McBride, O., Hartman, T. K., Gibson-Miller, J., Levita, L., Martinez, A. P., Stocks, T. V. A., Butter, S., Vallières, F., Hyland, P., Karatzias, T., & 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.