A-212 The Relationships between PAI over-reporting SVTs and PVTs in a Military Sample

Abstract

Abstract Objective Recent research has worked to explore the relationships between symptom and performance validity testing. The current study sought to examine the association between PAI over-reporting SVTs and well validated stand-alone and embedded PVTs. Methods Retrospective review of 468 active duty Army cases referred for outpatient neuropsychological testing at a Military Health Center. Each subject was administered the PAI, MSVT, NV-MSVT, and RBANS Effort Index. Groups were defined in two ways, as valid (0 PVT failures) or invalid (1 or more PVT failures) and based on the number of failed PVTs (0, 1, 2, and 3). Results Partial results are summarized here for the valid/invalid analysis. The PAI Negative Impression Management (NIM), Multi-Feigning Index (MFI), and Malingering Index (MAL) differed significantly as a function of PVT performance (p < .05). Differences on Rogers Discriminant Function were not significant. AUC for NIM, MAL, and MFI were .69, .66, and .54 (respectively). AUC for RDF was unacceptable at .49. At a T-score of 64 the NIM scale had specificity of .91, sensitivity of .32 and at a T-score of 59 the MAL had specificity of .91 and sensitivity of .14. Conclusions There appears an association between PVTs and PAI over-reporting scales, such that elevations on the NIM, MAL, and MFI scales are related to PVT failure. However, the sensitives of these scales are limited in predicting PVT failure. To this end, the current data are in line with previous studies that indicate the need to administer both performance and symptom validity scales.