A new performance-based measure of personality functioning impairment: development and preliminary evaluation of reliability and validity.

Personality functioning impairment is at the center of many dimensional models of personality. Available measures of personality functioning impairment are limited to self-report, clinician-/informant-rated, and interview methods. Although researchers have begun investigating established performance-based instruments' potential for assessing personality functioning impairment, administration and scoring of these instruments is complex and the latent variables they measure diverge from personality functioning impairment as described in the ICD-11 and the Alternative Model for Personality Disorders (AMPD) of the DSM.