A-194 TOMM Cutoff Scores Using a Large Sample of Military Personnel

Abstract

Abstract Objective The purpose of this study is to investigate the TOMM cutoff scores obtained in a large sample of military personnel. This study examines the traditional scores and proposes potential new ways to classify malingering using confidence intervals. Method The TOMM was administered as part of a neuropsychological battery a total of 1110 times, with the majority being one time. The battery contained 18 demographic variables and 15 neuropsychological tests. Participants were referred by military neurologists and medical officers for evaluation. Individuals had an initial clinical interview with a neuropsychologist prior to the battery being administered. Results TOMM scores from this sample ranged from 9 to 50. The majority of participants (N = 621, 79.60%) scored between 45 and 50. 26 participants (3.32%) received a 45, and 27 participants (3.46%) received a 44. Confidence intervals using means were calculated for each trial (95% CI [43.81, 44.74], [47.53, 48.28], 47.25, 48.10], respectively). The confidence interval for the average of all three trials was determined as well (95% CI [46.16, 46.95]). Conclusions These findings provide a description of the use of the TOMM with a large military sample. Further, the use of a confidence interval was added to provide a more robust assessment of effort. Future research should consider fitting scores to a probability distribution to determine the likelihood each participant is malingering based on the score they receive.