ABSTRACT
The Alternative Model for Personality Disorders (AMPD) in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM) assesses personality pathology as a combination of impairment (Criterion A) and problematic personality traits (Criterion B). The current study explores the ability of the traditional Personality Assessment Inventory (PAI) Borderline scales combined with new PAI-derived AMPD borderline personality disorder (BPD) facets in predicting DSM BPD criteria. The DSM BPD criteria were identified by the Structured Clinical Interview for DSM-IV Axis II Disorders (SCID-II) and by the OMNI Borderline Personality Scale. This study employed two clinical samples (n = 143 and n = 129). Correlations among the AMPD BPD facets, PAI BOR scales and SCID-II items or OMNI Borderline scale were calculated. A series of hierarchical linear regressions with stepwise entry revealed that the combination of PAI BOR subscales and AMPD BPD facets provided the strongest prediction of SCID-II Borderline PD criteria and OMNI Borderline scale, explaining 37% and 67% of the variance, respectively. Lastly, we assessed the BPD facet total and PAI BOR full scale’s ability to predict psychological health and illness severity. Clinical and research implications are discussed.