A-182 Development of a PTSD-Specific Embedded Validity Measure in the Personality Assessment Inventory

Abstract Objective/Background The present study investigated the feasibility of developing a PTSD-specific malingering scale embedded within Personality Assessment Inventory (PAI). Methods Participants consisted 489 individuals [mean age = 20.0 (SD 3.29); 71% female; 73.0% Caucasian, 17.6% African American, 3.5%, 9.4% Other] who completed PAI. 274 were in control group and instructed to answer normally while 215 simulate PTSD with intent successfully feign context legal case. following identified as candidate PAI subscales for logistic regression identify feigned PTSD: ARD-T, BOR-A, SCZ-T, ANX-P, DEP-P. Results Logistic analysis was performed known dependent variable subtest normed T-scores predictor variables. final full model five variables significantly predicted status (χ2 384.9, df 5, N 489, p < 0.001). accounted 54.5% variance (Cox Snell R2 0.545; Nagelkerke 0.730) performance classification overall 89.4% correctly their group. At cut value 0.65 specificity 94.9%, sensitivity 82.3%. Within model, incrementally predictive membership: ARD-T (B 0.05, 0.001), BOR-A 0.04, 0.05), ANX-P 0.05). Conclusions Preliminary evidence use an found. Further replication is needed clinical populations prior practice.