Journal of personality disorders
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The current study used a psychiatric sample (N = 69) to examine: (1) the correspondence between self- and other-reports of general personality, as measured by the Five-Factor Model (FFM; Costa & McCrae, 1990), and personality disorder (PD) traits, as measured by a structured interview, (2) the relations between these two sets of ratings (FFM and PD traits) and consensus ratings of PD and impairment, and (3) the incremental validity of other-rated personality scores. Agreement between raters for the five domains of the FFM ranged from .23 (agreeableness) to .71 (openness); for the PD traits agreement ranged from .37 (avoidant) to .69 (antisocial). ⋯ Substantial evidence was found for the incremental validity of other-rated personality scores, with these ratings accounting for an additional 8 to 20% of the overall variance in PD features. The other-rated FFM scores also accounted for more variance in consensus ratings of impairment in the domains of romance, work, and social relations.