Measures ICD-11 PTSD and Complex PTSD (CPTSD) symptoms. CPTSD includes the three PTSD clusters plus three Disturbances in Self-Organisation (DSO) domains: affect dysregulation, negative self-concept, and disturbances in relationships. Freely available and widely used since ICD-11 adoption in 2018.
Cloitre, M., Shevlin, M., Brewin, C.R., Bisson, J.I., Roberts, N.P., Maercker, A., Karatzias, T., & Hyland, P. (2018). The International Trauma Questionnaire: Development of a self-report measure of ICD-11 PTSD and complex PTSD. Acta Psychiatrica Scandinavica, 138(6), 536–546.
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