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Thirty-Third Annual Meeting of the Society for Research in Psychopathology

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92. Differentiating between Traits and Dysfunction in Personality Assessment

The Alternative Model of Personality Disorder (AMPD) requires both traits and dysfunction to diagnose a personality disorder (PD). However, whether dysfunction significantly increments traits in the prediction of PD remains an open question and empirical findings are mixed. Given that the PID-5 is a self-report measure and the LPFS is intended for clinician use, it is also important to consider that non-overlap may be a function of these different sources, rather than a difference between traits and dysfunction per se. Therefore, the current study extends the literature by evaluating the incremental utility of both self- and clinician-reported dysfunction over both self- and clinician-reported traits in the prediction of PD among 220 current/recent psychiatric patients. To that end, a series of hierarchical regressions were conducted in which SCID-II PD criteria were regressed on the PID-5 traits (either self or clinician rated) in Block 1, followed by PID-5 traits and LPFS dysfunction (either self or clinician rated) in Block 2. Overall, results suggest that clinician-rated LPFS dysfunction, particularly in the Identity subdomain, significantly increments both self- and clinician-rated traits. Self-rated dysfunction, on the other hand, did not significantly increment either self- or clinician-rated traits in the prediction of personality pathology. Revisions to the AMPD that would improve its parsimony by maximizing the distinction between traits and dysfunction are suggested.

Chloe Evans
University at Buffalo, The State University of New York

Leonard Simms
University at Buffalo, The State University of New York


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