The Personality Assessment Inventory (PAI) is among the most commonly used broadband inventories of psychological functioning. For the purposes of assessing trauma specifically, the most relevant aspect of the PAI is the Traumatic Stress subscale of the Anxiety-Related Disorders scale (ARD-T), which measures the degree to which a person feels wounded by something in their past. Research suggests that ARD-T is associated with exposure to a variety of different traumatic stressors. However, there is little research on the degree to which traumatic stressors that entail a component of interpersonal betrayal (i.e. betrayal trauma) are associated with higher scores on ARD-T relative to other stressors. In this study, we evaluated the relative associations between traumas with varying degrees of betrayal and scores on ARD-T in a secondary analysis of two non-clinical samples (college sample N = 494; crowdsourced sample N = 364) using a Bayesian approach to multiple regression. In both samples, traumas with both high and medium (but not low) degrees of betrayal were associated with elevated ARD-T scores. Findings suggest that ARD-T scores are associated with interpersonal trauma regardless of betrayal, which has implications for interpretation of the ARD-T scale in practice.
Keywords: Assessment; betrayal trauma; personality; traumatic stress.