Examining the Incremental Utility of DSM-5 Section III Traits and Impairment in Relation to Traditional Personality Disorder Scores in a Female Correctional Sample

Personality disorders (PDs) are challenging to assess and are associated with great individual and societal costs. In response to the limitations of categorical models, the DSM-5 included an alternative model (i.e., Section III), which uses impairment (Criterion A) and pathological traits (Criterion B) to diagnose PDs. Although numerous studies have illustrated dimensional trait models' ability to capture personality psychopathology, less attention has been paid to personality impairment. The present investigation sought to examine Criterion A's ability to contribute incrementally to the prediction of antisocial (ASPD), borderline (BPD), and narcissistic personality disorders (NPD), and Interpersonal-Affective (F1) and Impulsive-Antisocial (F2) features of psychopathy. The current study used 200 female inmates and found that impairment contributed to the prediction of BPD, NPD, and psychopathy F1 scores and did not add to the prediction of ASPD and psychopathy F2 scores. Difficulties in distinguishing between personality impairment and personality disordered traits are discussed.