In this study we assessed the DSM-5 trait model in a large Danish sample (n = 1,119) with respect to reliability of the applied Danish version of the Personality Inventory for DSM-5 (PID-5) self-report form by means of internal consistency and item discrimination. In addition, we tested whether the five-factor structure of the DSM-5 trait model can be replicated in a Danish independent sample using the PID-5 self-report form. Finally, we examined the hierarchical structure of DSM-5 traits. In terms of internal consistency and item discrimination, the applied PID-5 scales were generally found reliable and functional; our data resembled the five-factor structure of previous findings, and we identified a hierarchical structure from one to five factors that was conceptually reasonable and corresponded with existing findings. These results support the new DSM-5 trait model and suggest that it can be generalized to other languages and cultures.
The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5; American Psychiatric Association, 2013a) offers an alternative model for Personality Disorders (PDs) in Section III, which consists in part of a pathological personality traits criterion measured with the Personality Inventory for DSM-5 (PID-5). The PID-5 selfreport instrument currently exists in the original 220-item form, a short 100-item form, and a brief 25-item form. For clinicians and researchers, the choice of a particular PID- 5 form depends on feasibility, but also reliability and validity. The goal of the present study was to examine the psychometric qualities of all 3 PID-5 forms, simultaneously, based on a Danish sample (N = 1376) of 451 psychiatric outpatients and 925 community-dwelling participants. Scale reliability and factorial validity were satisfactory across all 3 PID-5 forms. The correlational profiles of the short and brief PID-5 forms with clinician-rated PD dimensions were nearly identical with that of the original PID-5 (rICC = .99 and .95, respectively). All 3 forms discriminated appropriately between psychiatric patients and community-dwelling individuals. This supports that all 3 PID-5 forms can be used to reliably and validly assess PD traits and provides initial support for the use of the abbreviated PID-5 forms in a European population. However, only the original 220-item form and the short 100-item form capture all 25 trait facets, and the brief 25-item form may be ideally limited to preliminary screening or situations with substantial time restrictions.