Investigating the Personality Inventory for DSM-5 using self and spouse reports

Two new clinical tools, the Personality Inventory for DSM-5 (PID-5) and its informant report version, the PID-5-IRF, were developed to assess personality pathology as described by the new trait-based model within Section III of DSM-5. The current study used both self and spousal reports to evaluate agreement between the PID-5 and the PID-5-IRF and to determine the extent to which these measures capture personality pathology as conceptualized in Section II of DSM-5. A nonclinical sample (N = 96 individuals) of recently married couples completed the self-report PID-5, the PID-5-IRF, and the SNAP-2 to assess self-reported DSM-IV PD criteria. Analyses found good to excellent agreement between spousal reports on the PID-5 and the PID-5-IRF for facets in the negative affectivity, detachment, and antagonism domains. In addition, both the PID-5 and the PID-5-IRF each individually accounted for a significant proportion of variance in self-reported DSM-IV PD criteria. Implications for the present findings are discussed.