INTRODUCTION: The DSM-5 Alternative Model of Personality Disorders (AMPD) and the ICD-11 classification of personality disorders (PD) are largely commensurate and, when combined, they delineate 6 trait domains: negative affectivity, detachment, antagonism/dissociality, disinhibition, anankastia, and psychoticism. OBJECTIVE: The present study evaluated the international validity of a brief 36-item patient-report measure that portrays all 6 domains simultaneously including 18 primary subfacets. METHODS: We developed and employed a modified version of the Personality Inventory for DSM-5 - Brief Form Plus (PID5BF+). A total of 16,327 individuals were included, 2,347 of whom were patients. The expected 6-factor structure of facets was initially investigated in samples from Denmark (n = 584), Germany (n = 1,271), and the USA (n = 605) and subsequently replicated in both patient- and community samples from Italy, France, Switzerland, Belgium, Norway, Portugal, Spain, Poland, Czech Republic, the USA, and Brazil. Associations with interview-rated DSM-5 PD categories were also investigated. RESULTS: Findings generally supported the empirical soundness and international robustness of the 6 domains including meaningful associations with familiar interview-rated PD types. CONCLUSIONS: The modified PID5BF+ may be employed internationally by clinicians and researchers for brief and reliable assessment of the 6 combined DSM-5 and ICD-11 domains, including 18 primary subfacets. This 6-domain framework may inform a future nosology for DSM-5.1 that is more reasonably aligned with the authoritative ICD-11 codes than the current DSM-5 AMPD model. The 36-item modified PID5BF+ scoring key is provided in online supplementary Appendix A see www.karger.com/doi/10.1159/000507589 (for all online suppl. material).

Center for Personality Disorder Research Psychiatric Research Unit Region Zealand Slagelse Denmark

CICPSI Faculdade de Psicologia Universidade de Lisboa Lisbon Portugal

Department of Addictology 1st Faculty of Medicine Charles University of Prague General University Hospital of Prague Prague Czechia

Department of Psychology Freie Universität Berlin Berlin Germany

Department of Psychology The Arctic University of Norway Tromsoe Norway

Department of Psychology University of Kassel Kassel Germany

Department of Psychology University of Otago Dunedin New Zealand

Department of Psychology University of Pittsburgh Pittsburgh Pennsylvania USA

Escola de Medicina Pontifícia Universidade Católica do Rio Grande do Sul Porto Alegre Brazil

Faculty of Medicine and Health Sciences University of Antwerp Leuven Belgium

Faculty of Psychology and Educational Sciences Katholieke Universiteit Leuven Leuven Belgium

Faculty of Psychology Vita Salute San Raffaele University Milan Italy

Hospital Clinic of Barcelona Barcelona Spain

Institute of Psychology Cardinal Stefan Wyszyński University Warsaw Poland

Institute of Psychology University of Brasília Brasília Brazil

Lleida Institute for Biomedical Research University of Lleida Catalonia Spain

Psychological Sciences Research Institute Université Catholique de Louvain Louvain la Neuve Belgium

Psychology Department Virginia Commonwealth University Richmond Virginia USA

STAPS University Paris Nanterre Paris France

University Psychiatric Centre Katholieke Universiteit Leuven Leuven Belgium

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