Psychopathy and Antisocial Personality Disorder in the Fifth Edition of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders: An Attempted Replication of Wygant et al. (2016)

The fifth edition of the American Psychiatric Association's (APA) Diagnostic and Statistical Manual of Mental Disorders (DSM-5) Section III Alternative Model of Personality Disorder (AMPD) was developed to ameliorate some of the concerns of the DSM-5 Section II categorical model by moving away from the discrete boundaries of behaviorally specific criteria to a hybridized dimensional trait-based approach. Wygant et al. (2016) examined the extent to which the AMPD improved the operationalization of antisocial personality disorder to more closely align with psychopathy, a notable weakness of DSM-5 Section II (Crego & Widiger, 2015; Lynam & Vachon, 2012; Strickland et al., 2013). Wygant et al. found that the DSM-5 Section III AMPD outperformed Section II in predicting various operationalizations of psychopathy in a sample of 200 male inmates. In the spirit of the importance in exploring replication (Tackett et al., 2017), the current study sought to replicate and extend these findings by comparing the ability of the AMPD and alternative trait models to account for psychopathy. Analyses showed a partial replication of Wygant et al.'s findings, indicating that additional traits to account for psychopathy should be included in DSM-5 Section III. The current study was not preregistered.