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2025

Brewin, C. R., Atwoli, L., Bisson, J. I., Galea, S., Koenen, K., & Lewis-Fernández, R. (2025). Post-traumatic stress disorder: evolving conceptualization and evidence, and future research directions. World Psychiatry, 24(1), 52–80. https://doi.org/10.1002/wps.21269Draczyńska, D., Mokros, Ł., Nowakowska, A., & Anczewska, M. (2025). Polish adaptation and validation of the International Trauma Questionnaire (ITQ) for PTSD and cPTSD according to ICD-11 in non-clinical and clinical samples. European Journal of Psychotraumatology, 16(1), 2468116. https://doi.org/10.1080/20008066.2025.2468116
‍Shevlin, M., Hyland, P., Brewin, C. R., Cloitre, M., Karatzias, T., & Redican, E. (2025). Testing the use of ‘clinical checks’ with the International Trauma Questionnaire to measure PTSD and complex PTSD. Acta Psychiatrica Scandinavica.Levin, Y., Mazza, A., Hyland, P., Karatzias, T., Shevlin, M., McGinty, G., Lis, E., Ben-Ezra, M., & Bachem, R. (2025). Positive symptoms of psychosis and ICD-11 complex post-traumatic stress disorder: A network analysis in a Canadian sample from Montreal. The Canadian Journal of Psychiatry.‍Redican, E., Shevlin, M., Ben-Ezra, M., Karatzias, T., & Hyland, P. (2025). Are ‘time’ and ‘culture’ useful and necessary diagnostic criteria for ICD-11 Prolonged Grief Disorder? A Cross-national study. Death Studies. https://doi.org/10.1080/07481187.2025.2468822Lahav, Y., Cloitre, M., Hyland, P., Shevlin, M., Ben-Ezra, M., & Karatzias, T. (2025). Complex PTSD and identification with the aggressor among survivors of childhood abuse. Child Abuse & Neglect, 160, 107196.

2024

Redican, E., Hyland, P., & Shevlin, M. (2024). Testing the distinctiveness of prolonged grief disorder from posttraumatic stress disorder and depression in large, bereaved community samples. Journal of Affective Disorders, 363, 214-220. https://doi.org/10.1016/j.jad.2024.07.127Shevlin, M., Hyland, P., Duffy, M., Murphy, J., & Redican, E. (2024). The psychological Burden of bereavement in the general population of the UK and Ireland. Death Studies. https://doi.org/10.1080/07481187.2024.2420877 Vang, M. L., Andersen, L. P. S., Biering, K., Hyland, P., Shevlin, M., Linnet, J., & Pihl-Thingvad, J. (2024). ICD-11 adjustment disorder: Translation and validation of the Danish International Adjustment Disorder Questionnaire among a working population of social educators. Journal of Psychiatric Research, 179, 388–395. https://doi.org/10.1016/j.jpsychires.2024.09.035Hyland, P., Shevlin, M., Martsenkovskyi, D., Ben-Ezra, M., & Brewin, C. R. (2024). Testing predictions from the memory and identity theory of ICD-11 complex posttraumatic stress disorder: Measurement development and initial findings. Journal of Anxiety Disorders, 105, 102898. https://doi.org/10.1016/j.janxdis.2024.102898Shevlin, M., Hyland, P., Cloitre, M., Brewin, C., Martsenkovskyi, D., Ben-Ezra, M., Bondjers, K., Karatzias, T., Duffy, M., & Redican, E. (2024). Assessing self-reported prolonged grief disorder with "clinical checks": A proof of principle study. Journal of Traumatic Stress, 10.1002/jts.23100. https://doi.org/10.1002/jts.23100Hyland, 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.22986Redican, E., Shevlin, M., Hyland, P., Karatzias, T., Martsenkovskyi, D., & Ben-Ezra, M. (2024). Development and validation of the caregiver-report version of the international grief questionnaire (IGQ-CG): Results from a Ukrainian sample of parents. Clinical Child Psychology and Psychiatry, 13591045241260897. https://doi.org/10.1177/13591045241260897Liu, H., Ho, G. W. K., Karatzias, T., Shevlin, M., Wong, K. H., & Hyland, P. (2024). Self-harm, suicide, and ICD-11 complex posttraumatic stress disorder in treatment-seeking Chinese adolescents with major depression. Journal of Child & Adolescent Trauma, 17(4), 1057–1066. https://doi.org/10.1007/s40653-024-00655-0Ho, G. W. K., Chan, K. L., Karatzias, T., Hyland, P., Fung, H. W., & Shevlin, M. (2024). Prevalence and validity of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD: A population-based survey of Hong Kong adults. Asian Journal of Psychiatry, 96, 104045. https://doi.org/10.1016/j.ajp.2024.104045Karatzias, T., Shevlin, M., Cloitre, M., Busuttil, W., Graham, K., Hendrikx, L., Hyland, P., Biscoe, N., & Murphy, D. (2024). Enhanced Skills Training in Affective and Interpersonal Regulation versus Treatment as Usual for ICD-11 Complex PTSD: A Pilot Randomised Controlled Trial (The RESTORE Trial). Psychotherapy and Psychosomatics, 93(3), 203–215. https://doi.org/10.1159/000538428Redican, E., Hyland, P., Shevlin, M., Martsenkovskyi, D., Karatzias, T., & Ben-Ezra, M. (2024). Prevalence and correlates of ICD-11 Prolonged Grief Disorder among parents living in Ukraine during the war with Russia. Acta Psychiatrica Scandinavica, 149, 425-435. https://doi.org/10.1111/acps.13678Martsenkovskyi, D., Shevlin, M., Ben-Ezra, M., Bondjers, K., Fox, R., Karatzias, T., Martsenkovska, I., Martsenkovsky, I., Pfeiffer, E., Sachser, C., Vallières, F., & Hyland, P. (2024). Mental health in Ukraine in 2023. European Psychiatry, 67(1):e27. doi: 10.1192/j.eurpsy.2024.12Bressington, D., Hyland, P., Steele, H., Byrne, M., Mitchell, D., Keane, C., Shevlin, M., Ho, G., Murta, J. C. D., Easpaig, B. N. G., Liu, X., Zhai, J., Murphy, D., & Karatzias, T. (2024). ICD-11 post-traumatic stress disorder and complex post-traumatic stress disorder in mental health support-seeking former-serving Australian defence force veterans. The Australian and New Zealand Journal of Psychiatry, 58(5), 416–424. https://doi.org/10.1177/00048674241230197Hyland, 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 & Neglect, 147, 106563. https://doi.org/10.1016/j.chiabu.2023.106563Hyland, 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, 45-61. http://dx.doi.org/10.1080/15299732.2023.2231928Hyland, 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.22986McGinty, G., Fox, R., & Hyland, P. (2024). Assessing prevalence, validity, and correlates of ICD-11 posttraumatic stress disorder and complex posttraumatic stress disorder in Ireland. Psychological Trauma: Theory, Research, Practice and Policy, 16(5), 784–793. https://doi.org/10.1037/tra0001472

2023

Hyland, P., Shevlin, M., & Brewin, C. R. (2023). The memory and identity theory of ICD-11 complex posttraumatic stress disorder. Psychological Review, 130(4), 1044–1065. https://doi.org/10.1037/rev0000418Karatzias, T., Shevlin, M., Ben-Ezra, M., McElroy, E., Redican, E., Vang, M. L., Cloitre, M., Ho, G. W. K., Lorberg, B., Martsenkovskyi, D., & 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, 10.1111/acps.13529. https://doi.org/10.1111/acps.13529Killikelly, C., Kagialis, A., Henneman, S., Coronado, H., Demanarig, D., Farahani, H., Özdoğru, A. A., Yalçın, B., Yockey, A., Gosnell, C. L., Jia, F., Maisel, M., Stelzer, E., Wilson, D., Anderson, J., Charles, K., Cummings, J. P., Faas, C., Knapp, B., Koneczny, B., … Irgens, M. S. (2023). Measurement and assessment of grief in a large international sample. Journal of Affective Disorders, S0165-0327(23)00113-1. https://doi.org/10.1016/j.jad.2023.01.095Fernández-Fillol, C., Owczarek, M., Pérez-García, M., Karatzias, T., Shevlin, M., Hyland, P., & Hidalgo-Ruzzante, N. (2023). The role of resilience in the relationship between Intimate Partner Violence severity and ICD-11 CPTSD severity. European Journal of Psychotraumatology, 15(1), 2285671. https://doi.org/10.1080/20008066.2023.2285671Ho, G. W. K., Vang, M. L., 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.22943Hyland, P., Redican, E., Karatzias, T., & Shevlin, M. (2023). Assessing the validity and reliability of the International Anxiety Questionnaire and the International Depression Questionnaire in two bereaved national samples. Clinical Psychology & Psychotherapy, 31, e2917. DOI: 10.1002/cpp.2917Shevlin, 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, 1077-1089. doi: 10.1002/jts.22972Karatzias, T., Bohus, M., Shevlin, M., Hyland, P., Bisson, J. I., Roberts, N. P., Cloitre, M. (2023). Distinguishing between ICD-11 Complex Post-Traumatic Stress Disorder and Borderline Personality Disorder: A clinical guide and recommendations for future research. British Journal of Psychiatry, 223(3), 403–406. https://doi.org/10.1192/bjp.2023.80Karatzias, T., Bohus, M., Shevlin, M., Hyland, P., Bisson, J. I., Roberts, N. P., Cloitre, M. (2023). Is it possible to differentiate between ICD-11 Complex PTSD and Borderline Symptoms? World Psychiatry, 22(3), 484–486. https://doi.org/10.1002/wps.21098Shevlin, M., Redican, E., Hyland, P., Murphy, J., Karatzias, T., McBride, O., Bennett, K., Butter, S., Hartman, T. K., Vallières, F., & 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, 1535-1547. https://doi.org/10.1007/s00127-023-02469-1
‍ Shevlin, M., Hyland, P., Butter, S., McBride, O., Hartman, T., Karatzias, T., & Bentall, R. P. (2023). The development and initial validation of self-report measures of ICD-11 depression and generalised anxiety disorder: The International Depression Questionnaire (IDQ) and the International Anxiety Questionnaire (IAQ). Journal of Clinical Psychology, 79, 854-870. https://doi.org/10.1002/jclp.23446

2022

Maercker, A., Cloitre, M., Bachem, R., Schlumpf, Y. R., Khoury, B., Hitchcock, C., & Bohus, M. (2022). Complex post-traumatic stress disorder. Lancet, 400, 60-72. DOI: https://doi.org/10.1016/S0140-6736(22)00821-2Redican, E., Hyland, P., Cloitre, M., McBride, O., Karatzias, T., Murphy, J., Bunting, L., & Shevlin, M. (2022). Prevalence and predictors of ICD-11 PTSD and Complex PTSD in young people. Acta Psychiatrica Scandinavica, 146, 110-125. DOI: 10.1111/acps.13442Frost, R., Vang, M. L., Hyland, P., Shevlin, M., McCarthy, A., & Murphy, J. (2022). PTSD and Complex PTSD among survivors of sexual violence in Ireland; assessing the validity and reliability of the international trauma questionnaire. Epidemiology and Psychiatric Sciences, 31, e42. DOI: 10.1017/S2045796022000245Rossi, R., Socci, V., Pacitti, F., Carmassi, C., Rossi, A., Di Lorenzo, G., & Hyland, P. (2022). The Italian version of the International Trauma Questionnaire: symptom and network structure of PTSD and cPTSD in a sample of late adolescents exposed to a natural disaster. Frontiers in Psychiatry, 13, 859877. doi: 10.3389/fpsyt.2022.859877Karatzias, T., Knefel, M., Maercker, A., Cloitre, M., Reed, G., Bryant, R., Ben-Ezra, M., Kazalauskas, E., Jowett, S., Shevlin, M., McElroy, E., & Hyland, P. (2022). The network structure of ICD-11 Disorders Specifically Associated with Stress: Adjustment Disorder, Prolonged Grief Disorder, Posttraumatic Stress Disorder (PTSD) and Complex PTSD. Psychopathology, 55, 226-234. DOI: 10.1159/000523825McQuillan, K., Hyland, P., & Vallières, F. (2022). Prevalence, correlates, and the mitigation of ICD-11 CPTSD among homeless adults: The role of self-compassion. Child Abuse & Neglect, 127, 105569. doi: 10.1016/j.chiabu.2022.105569Fox, R., Hyland, P., Coogan, A. N., Cloitre, M., & McHugh Power, J. (2022). Posttraumatic stress disorder, complex PTSD and subtypes of loneliness among older adults. Journal of Clinical Psychology, 78(2), 321-342. DOI: 10.1002/jclp.23225Jowett, 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 & Dissociation, 23, 52-67. doi: 10.1080/15299732.2021.1934936Levin, Y., Bachem, R., Hyland, P., Karatzias, T., Shevlin, M., Ben-Ezra, M., & Maercker, A. (2022). Validation of the International Adjustment Disorder Questionnaire in Israel and Switzerland. Clinical Psychology & Psychotherapy. DOI: 10.1002/cpp.2710

2021

Christen, D., Killikelly, C., Maercker, A., & Augsburger, M. (2021). Item response model validation of the German ICD-11 International Trauma Questionnaire for PTSD and CPTSD. Clinical Psychology in Europe, 3, e5501. https://doi.org/10.32872/cpe.5501Redican, E., Cloitre, M., Hyland, P., McBride, O., Karatzias, T., Murphy, J., & Shevlin, M. (accepted). The latent structure of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD in a general population sample from the USA: A factor mixture modelling approach. Journal of Anxiety Disorders.Cloitre, M., Hyland, P., Prins, A., & Shevlin, M. (2021). The International Trauma Questionnaire (ITQ) measures reliable and clinically significant treatment-related change in PTSD and complex PTSD. European Journal of Psychotraumatology, 12, 1930961. doi: 10.1080/20008198.2021.1930961Redican, 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, 102381. https://doi.org/10.1016/j.janxdis.2021.102381Levin, Y., Bachem, R., Hyland, P., Karatzias, T., Shevlin, M., Ben-Ezra, M., & Maercker, A. (2021). Fatalism and ICD-11 CPTSD and PTSD diagnoses: Results from Nigeria, Kenya, & Ghana. European Journal of Psychotraumatology.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 population samples. European Psychiatry, 64(1), e66. doi: 10.1192/j.eurpsy.2021.2239.Astill Wright, L., Roberts, N. P., Lewis, C., Simon, N., Hyland, P., Ho, G. W. K., McElroy, E., & Bisson, J. I. (2021). High prevalence of somatisation in ICD-11 Complex PTSD: A cross sectional cohort study. Journal of Psychosomatic Research, 148, 110574. https://doi.org/10.1016/j.jpsychores.2021.110574Fox, R., Hyland, P., Coogan, A. N., Cloitre, M., & McHugh Power, J. (2021). Posttraumatic stress disorder (PTSD), Complex PTSD and subtypes of loneliness among older adults. Journal of Clinical Psychology. DOI: 10.1002/jclp.23225Charak, R., Cano-Gonzalez, I., Shevlin, M., Ben-Ezra, M., Karatzias, T., & Hyland, P. (2021). Dimensional latent structure of ICD-11 posttraumatic stress disorder, complex PTSD, and adjustment disorder: Evidence from Ghana, Kenya, and Nigeria. Traumatology. https://doi.org/10.1037/trm0000311

Jowett, S., Karatzias, T., Shevlin, M., & Hyland, P. (2021). Psychological trauma at different developmental stages and ICD-11 CPTSD: The role of dissociation. Journal of Trauma & Dissociation. doi: 10.1080/15299732.2021.1934936
‍Jowett, S., Shevlin, M., Hyland, P., & Karatzias, T. (2021). Somatisation and COVID-19 related Posttraumatic Stress Disorder symptoms: The role of hyperarousal. Psychosomatic Medicine.
‍Fox, R., McHugh Power, J., Coogan, A. N., Beekman, A. T. F., van Tilburg, T. G., & Hyland, P. (2021). Posttraumatic stress disorder and loneliness are associated over time: A longitudinal study on PTSD symptoms and loneliness, among older adults. Psychiatry Research, 299, 113846. https://doi.org/10.1016/j.psychres.2021.113846
‍Choi, H., Lee, W., & Hyland, P. (2021). Factor structure and symptom classes of ICD-11 complex posttraumatic stress disorder in a South Korean general population sample with adverse childhood experiences. Child Abuse & Neglect, 114, 104982. https://doi.org/10.1016/j.chiabu.2021.104982
‍Ho, G. W. K., Karatzias, T., Vallières, F., Cloitre, M., Ben-Ezra, M., Bisson, J. I., Roberts, N. P., Wright, L. A., & Hyland, P. (2021). Complex PTSD symptoms mediate the association between childhood maltreatment and physical health problems. Journal of Psychosomatic Research, 142, 110358. https://doi.org/10.1016/j.jpsychores.2021.110358
‍Karatzias, T. Shevlin, M., Hyland, P., Ford, J., Fyvie, C., Gradison, G., & Cloitre, M. (2021). Childhood trauma, attachment orientation and Complex PTSD (CPTSD) symptoms in a clinical sample: Implications for treatment. Development and Psychopathology, 1-6. doi: 10.1017/S0954579420001509
‍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, Stress, & Coping, 34, 191-202. Doi: 10.1080/10615806.2020.1803006
‍Cloitre, M., Brewin, C., Kazalauskas, E., Lueger-Schuster, B., Karatzias, T., Hyland, P., & Shevlin, M., (2020). The need for research on PTSD in children and adolescents: A commentary on Elliot et al. (2020). Journal of Child Psychology and Psychiatry, 62, 277-279. https://doi.org/10.1111/jcpp.13361
‍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, and Policy, 13(2), 133–141. https://doi.org/10.1037/tra0000908
‍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, Research, Practice, and Policy 13(2),142-148. https://doi.org/10.1037/tra0000966
‍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 Psychiatric Epidemiology, 56, 649–658. https://doi.org/10.1007/s00127-020-01912-x

2020

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. https://doi.org/10.1016/j.psychres.2020.112871
‍ 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 Trauma and Loss. https://doi.org/10.1080/15325024.2019.1689718Gilbar, O., Dekel, R., Hyland, P., & Cloitre, M. (2020). Examining ICD-11 CPTSD factors as predictors of severity of intimate partner violence among mandated men. Child Abuse & Neglect, 262, 429-439. https://doi.org/10.1016/j.jad.2019.11.060
‍Ben-Ezra, M., Hyland, P., Karatzias, T., Maercker, A., Hamama-Raz, Y., Lavenda, O., Mahat-Shamir, M., & Shevlin, M. (2020). ICD-11 disorders specifically associated with stress in Africa: A cross-country psychiatric screening of ICD-11 Disorders Specifically Associated with Stress in Kenya, Nigeria and Ghana. European Journal of Psychotraumatology.
‍Letica-Crepulja, M., Stevanović, A., Protuđer, M., Juretić, T. G., Rebić, J., & Frančišković, T. (2020) Complex PTSD among treatment-seeking veterans with PTSD. European Journal of Psychotraumatology, 11:1. DOI: 10.1080/20008198.2020.1716593
‍Shevlin, M., Hyland, P., Ben-Ezra, M., Karatzias, T., Cloitre, M., Vallieres, 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, 265-274. DOI: 10.1111/acps.13126Ho, G. W. K., Hyland, P., Shevlin, M., Inoue, S., Yang, P.J., Chen, F. H., Chan, A., & 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, 11, 1717826. https://doi.org/10.1080/20008198.2020.1717826Kazlauskas, E., Zelviene, P., Daniunaite, I., Hyland, P., Kvedaraite, M., Shevlin, M., & Cloitre, M. (2020). The structure of ICD-11 PTSD and Complex PTSD in adolescents exposed to potentially traumatic experiences. Journal of Affective Disorders, 265, 169-174. https://doi.org/10.1080/20008198.2020.1717826Haahr-Pedersen, I., Perera, C., Hyland, P., Vallieres, F., Murphy, D., Hansen, M., Spitz, P., Hansen, P., & Cloitre, M. (2020). Females have more complex patterns of childhood adversity: Implications for mental, social, and emotional outcomes in adulthood. European Journal of Psychotraumatology, 11:1, 1708618. https://doi.org/10.1080/20008198.2019.1708618Hyland, P., Shevlin, M., Fyvie, C., Cloitre, M., & Karatzias, T. (2020). The relationship between ICD-11 PTSD, Complex PTSD and dissociation. Journal of Trauma & Dissociation, 21, 62-72. https://doi.org/10.1080/15299732.2019.1675113Ho, G. W. K., Bressington, D., Karatzias, T., Chien, W. T., Inoue, S., Yang, P. J., Chan, A. C. Y., & Hyland, P. (2020). Patterns of exposure to adverse childhood experiences and their associations with mental health: a survey of 1,346 young adults in East Asia. Social Psychiatry and Psychiatric Epidemiology, 55, 339-349. doi: 10.1007/s00127-019-01768-w.

2019

Cloitre, M., Hyland, P., Bisson, J. I., Brewin, C. R., Roberts, N. P., Karatzias, T., & Shevlin, M. (2019). ICD-11 PTSD and Complex PTSD in the United States: A population-based study. Journal of Traumatic Stress, 32, 833-842. doi: 10.1002/jts.22454McElroy, E., Shevlin, E., Murphy, S., Roberts, B., Bisson, J. Ben-Ezra, M., & Hyland, P. (in press). ICD-11 PTSD and Complex PTSD: Structural validation using exploratory graph analysis. World Psychiatry, 18, 236-237. Hyland, P., Karatzias, T., Cloitre, M., & Shevlin, M. (2019). Examining the discriminant validity of Complex PTSD and Borderline Personality Disorder symptoms: Results from a UK community sample. Journal of Traumatic Stress, 32, 855-863. doi: 10.1002/jts.22444 Bondjers, K., Hyland, P., Roberts, N. P., Bisson, J. I., Willebrand, M., & Arnberg, F. K. (2019). Validation of a clinician-administered diagnostic measure of ICD-11 PTSD and Complex PTSD: the International Trauma Interview in a Swedish sample. European Journal of Psychotraumatology, 10, 1665617. doi:10.1080/20008198.2019.1665617Ho, G. W. K., Karatzias, T., Cloitre, M., Chan, A. C. Y., Bressington, D., Chien, W. T., Hyland, P., & Shevlin, M. (2019). Translation and validation of the Chinese International Trauma Questionnaire (ITQ) for the assessment of posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD). European Journal of Psychotraumatology, 10, 1608718. Doi: 10.1080/20008198.2019.1608718 Karatzias, T., Murphy, P., Cloitre, M., Bisson, J. I., Roberts, N. P., Shevlin, M., Hyland, P., Maercker, A., Ben-Ezra, M., Coventry, P., Bradley, A., & Hutton, P. (2019). Psychological interventions for ICD-11 Complex PTSD symptoms: Systematic review and meta-analysis. Psychological Medicine, 1–15. https://doi.org/10.1017/S0033291719000436Frost, R., Hyland, P., Shevlin, M., McCarthy, A., Halpin, R., & Murphy, J. (2019). The complexity of trauma exposure and response; competing formulations of CPTSD among a refugee sample. Psychological Trauma: Theory, Research, Practice, and Policy, 11, 165-175. doi: 10.1037/tra0000408Karatzias, T., Hyland, P., Bradley, A., Fyvie, C., Logan, K., Bisson, J. I., Roberts, N. P., Cloitre, M., & Shevlin, M. (2019). Is self-compassion a worthwhile therapeutic target for ICD-11 Complex PTSD (CPTSD)? Behavioural and Cognitive Psychotherapy, 47, 257-269. doi: 10.1017/S1352465818000577

2018

Cloitre, M., Shevlin, M., Brewin, C. R., Bisson, J. I., Roberts, N. P., Maercker, A., Karatzias, T., & Hyland, P. (in press). The International Trauma Questionnaire (ITQ): Development of a self-report measure of ICD-11 PTSD and Complex PTSD. Acta Psychiatrica Scandinavica, 138, 536-546. Doi: 10.1111/acps.12956.Maercker, A., Hecker, T., Augsburger, M., & Kliem, S. (2018). ICD-11 prevalence rates of posttraumatic stress disorder and complex posttraumatic stress disorder in a German nationwide sample. The Journal of Nervous and Mental Disease, 206(4), 270-276. doi: 10.1097/NMD.0000000000000790.Vallières, F., Ceannt, R., Daccache, F., Daher, R. A., Sleiman, J. B., Gilmore, B., Byrne, S., Shevlin, M., Murphy, J., & Hyland, P. (2018). The validity and clinical utility of the ICD-11 proposals for PTSD and Complex PTSD among Syrian Refugees in Lebanon. Acta Psychiatrica Scandinavica, 138, 547-557. Doi: 10.1111/acps.12973.
‍ Ben-Ezra, M., Karatzias, T., Hyland, P., Brewin, C. R., Cloitre, M., Bisson, J. I., Roberts, N. R., Lueger-Schuster, B., & Shevlin, M. (2018). Posttraumatic stress disorder (PTSD) and Complex PTSD (CPTSD) as per ICD-11 proposals: A population study in Israel. Depression and Anxiety, 35, 264-274. doi: 10.1002/da.22723
‍ Hyland, P., Shevlin, M., Fyvie, C., & Karatzias, T. (2018). Posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) in DSM-5 and ICD-11: Clinical and behavioural correlates. Journal of Traumatic Stress, 31, 174-180. DOI: 10.1002/jts.22272
‍ Hyland, P., Ceannt, R., Daccache, F., Daher, R. A., Sleiman, J. B., Gilmore, B., Byrne, S., & Vallières, F. (2018). Are PTSD and Complex-PTSD distinguishable within a treatment seeking sample of Syrian refugees living in Lebanon? Global Mental Health, 5, 1-9. DOI: 10.1017/gmh.2018.2
‍ Karatzias, T., Bradley, A., Shevlin, M., Hyland, P., Brewin, C. R., Cloitre, M., Kitchiner, N., Downes, T., Jumbe, S., Bisson, J., & Roberts, N. (2018). The role of negative cognitions, emotion regulation and attachment style in Complex PTSD (CPTSD): Implications for new and existing therapies. British Journal of Clinical Psychology, 57, 177-185. DOI: 10.1111/bjc.12172
‍ Knefel, M., Lueger-Schuster, B., Karatzias, T., Shevlin, M., & Hyland, P. (2018). From child maltreatment to ICD-11 complex posttraumatic stress symptoms: The role of emotion regulation and revictimisation. Journal of Clinical Psychology. doi: 10.1002/jclp.22655.
‍ Shevlin, M., Hyland, P., Vallieres, F., Bisson, J., Makhashvili, N., Javakhishvili, Kharchenk, N., Shpiker, M., & Roberts, B. (2018). A comparison of DSM-5 and ICD-11 Posttraumatic Stress Disorder rates and comorbidity: An analysis of the Ukrainian Internally Displaced Person’s Mental Health Survey. Acta Psychiatrica Scandinavica, 137, 138-147. doi: 10.1111/acps.12840
‍ Shevlin, M., Hyland, P., Roberts, N., Bisson, J., Brewin, C., & Cloitre, M. (2018). A psychometric assessment of disturbances in self-organization symptom indicators for ICD-11 complex PTSD. European Journal of Psychotraumatology, 9, 1419749. doi: 10.1080/20008198.2017.1419749
‍ Kazlauskas, E., Gegieckaite, G., Hyland, P., Zelviene, P., & Cloitre M. (2018). The structure of the ICD-11 PTSD and Complex PTSD in a Lithuanian clinical sample. European Journal of Psychotraumatology, 9, 1414559. Doi: 10.1080/20008198.2017.1418103

2017

Brewin, C. R., Cloitre, M., Hyland, P., Shevlin, M., Maercker, A., Bryant, R. A., Humayun, A., Jones, L. M., Kagee, A., Rousseau, C., Somasundaram, D., Suzuki, Y., Wessely, S., van Ommeren, M., & Reed, G. M. (2017). A review of current evidence regarding the ICD-11 proposals for diagnosing PTSD and Complex PTSD. Clinical Psychology Review, 58, 1-15. doi: 10.1016/j.cpr.2017.09.001.
‍ Hyland, P., Shevlin, M., Brewin, C. R., Cloitre, M., Downes, A. J., Jumbe, S., Karatzias, T., Bisson J. I., & Roberts, N. P. (2017). Factorial and discriminant validity of ICD-11 PTSD and CPTSD using the new International Trauma Questionnaire. Acta Psychiatrica Scandinavica, 136, 231-338. doi: 10.1111/acps.12771
‍ Shevlin, M., Hyland, P., Karatzias, T., Fyvie, C., Roberts, N., Bisson, J. I., Brewin, C. R., & Cloitre, M. (2017). Alternative models of posttraumatic stress disorder (PTSD) and complex posttraumatic stress disorder (CPTSD) based on the new ICD-11 proposals. Acta Psychiatrica Scandinavica, 135, 419-428. DOI: 10.1111/acps.12695
‍ Hansen, M., Hyland, P., Karstoft, K., Vaegter, H. B., Bramsen, R. H., Nielsen, A. B., Armour, C., Andersen, S. B., Hoybye, M. T., Larsen, S. K., & Andersen, T. E. (2017). Does size really matter? A multisite study assessing the latent structure of the proposed ICD-11 and the DSM-5 diagnostic criteria for PTSD. European Journal of Psychotraumatology, 8, 1398002. DOI: 10.1080/20008198.2017.1398002
‍ Karatzias, T., Shevlin, M., Fyvie, C., Hyland, P., Efthimiadou, E., Wilson, D., Roberts, N., Bisson, J., Brewin, C. R., & Cloitre, M. (2017). Evidence of distinct profiles of posttraumatic stress disorder (PTSD) and complex posttraumatic stress disorder (CPTSD) based on the new ICD-11 Trauma Questionnaire (ICD-TQ). Journal of Affective Disorders, 207, 181-187. doi: 10.1016/j.jad.2016.09.032.
‍ Hyland, P., Murphy, J., Shevlin, M., Vallières, F., McElroy, E., Elklit, A., Christoffersen, M., & Cloitre, M. (2017). Variation in post-traumatic response: The role of trauma type in predicting ICD-11 PTSD and CPTSD symptoms. Social Psychiatry and Psychiatric Epidemiology, 52, 727-736. doi: 10.1007/s00127-017-1350-8.
‍ Hyland, P., Brewin, C., & Maercker, A. (2017). Predictive validity of ICD-11 PTSD as measured by the Impact-of-Event Scale Revised: A 15-year prospective, longitudinal study of political prisoners. Journal of Traumatic Stress, 30, 125-132. doi: 10.1002/jts.22171
‍ Hyland, P., Shevlin, M., Elklit, A., Murphy, J., Vallières, F., Garvert D., W., & Cloitre, M. (2017). An assessment of the construct validity of the ICD-11 proposals for complex posttraumatic stress disorder. Psychological Trauma: Theory, Research, Practice, and Policy, 9, 1-9. doi: 10.1037/tra0000114

2016-2013

Karatzias, T., Shevlin, M., Fyvie, C., Hyland, P., Efthimiadou, E., Wilson, D., Roberts, N., Bisson, J., Brewin, C. R., & Cloitre, M. (2016). An initial psychometric assessment of an ICD-11 based measure of PTSD and Complex PTSD (ICD-TQ): Evidence of construct validity. Journal of Anxiety Disorders, 44, 73-79. doi: 10.1016/j.janxdis.2016.10.009. Hansen, M., Hyland, P., Armour, C., Elklit, A., & Shevlin, M. (2015). Less is more? Assessing the validity of the ICD-11 model of PTSD across multiple trauma samples. European Journal of Psychotraumatology, 6: 28766. http://dx.doi.org/10.3402/ejpt.v6.28766
‍ Elklit, A., Hyland, P., & Shevlin, M. (2014). Evidence of symptom profiles consistent with posttraumatic stress disorder and complex posttraumatic stress disorder in different trauma samples. European Journal of Psychotraumatology, 5, 24221. doi: 10.3402/ejpt.v5.24221
‍ Maercker, A., Brewin, C. R., Bryant, R. A., Cloitre, M., Ommeren, M., Jones, L. M., ... & Somasundaram, D. J. (2013). Diagnosis and classification of disorders specifically associated with stress: proposals for ICD‐11. World Psychiatry, 12, 198-206. DOI: 10.1002/wps.20057
‍ Maercker A, Brewin C. R, Bryant R. A, Cloitre M, Reed G. M, Van Ommeren M, et al. (2013). Proposals for mental disorders specifically associated with stress in the ICD-11. Lancet, 381, 1683–1685.