Work

Psychometric properties of the Oppression-Based Traumatic Stress Inventory and measurement equivalence across PTSD treatment and diverse undergraduate samples.

Year: 2026

Type: article

Abstract: OBJECTIVE: Research demonstrates that oppression can produce symptoms consistent with posttraumatic stress disorder (PTSD), but traditional trauma assessments do not account for the impacts of oppression. This study addressed this gap by establishing the dimensionality, measurement equivalence, reliability, and convergent validity of the Oppression-Based Traumatic Stress Inventory across two samples. METHOD: = 227) who completed a series of questionnaires, including the Oppression-Based Traumatic Stress Inventory. RESULTS: ) that yielded acceptable fit after adding four error covariances. Measurement invariance testing revealed three of the 25 items had parameters that differed across samples. Excellent reliability was found for all three factors. A higher order factor appeared plausible but was largely noninvariant across samples. Finally, we provide evidence for convergent validity (with measures of standard PTSD, posttraumatic cognitions, depressive symptoms, psychosocial functioning, racial discrimination, gender discrimination, and, to some degree, material hardship). CONCLUSIONS: Our findings strengthen the psychometric evidence supporting this novel measure of oppression-based traumatic stress, an important step in furthering intersectional research on this topic. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

Source: Psychological Trauma Theory Research Practice and Policy

DOI: 10.1037/tra0002102