Comparison of the Memory Complaints Inventory and the PAI Cognitive Bias Scale in a Military Sample

Abstract

Abstract Objective The Memory Complaints Inventory (MCI) is a stand-alone memory-based symptom validity test (SVT). The measure is promising and has been used with relative frequency, but requires additional research (Armistead-Jehle & Shura, 2022). The current study sought to expand the empirical base of the MCI by comparing it to the Cognitive Bias Scale, a new symptom validity measure assessing cognitive over reporting on the Personality Assessment Inventory (PAI). Method Retrospective review of 273 military service members seen for neuropsychological evaluation and administered both the PAI and MCI. Results Area under the curve values for the MCI overall mean score and MCI implausible scales for a PAI Cognitive Bias Scale (CBS) cut score of >14 were large in effect (0.77 and 0.78, respectively). The effect size between those that passed and failed the CBS on the mean of MCI scales was also large (d = 1.13). Classification statistics indicated that a cut score of 52% on the mean MCI scales and 29% on the mean MCI implausible subscales indicated specificities of 0.94 and 0.93 and sensitivities of 0.30 and 0.29, respectively. Conclusions These data support the MCI as a cognitive SVT relative to the PAI CBS. We offer guidance on how to integrate these SVT measures in military samples.