A Known-Groups Evaluation of the Response Bias Scale in a Neuropsychological Setting

作者：Sullivan Karen A^*; Elliott Cameron D; Lange Rael T; Anderson Deborah S

来源：Applied Neuropsychology, 2013, 20(1): 20-32.

DOI：10.1080/09084282.2012.670149

• inadequate effort
• malingering
• MMPI-2
• neuropsychological assessment
• Response Bias Scale

We evaluated the Minnesota Multiphasic Personality Inventory-Second Edition (MMPI-2) Response Bias Scale (RBS). Archival data from 83 individuals who were referred for neuropsychological assessment with no formal diagnosis (n=10), following a known or suspected traumatic brain injury (n=36), with a psychiatric diagnosis (n=20), or with a history of both trauma and a psychiatric condition (n=17) were retrieved. The criteria for malingered neurocognitive dysMNCD) were applied, and two groups of participants were formed: poor effort (n=15) and genuine responders (n=68). Consistent with previous studies, the difference in scores between groups was greatest for the RBS (d=2.44), followed by two established MMPI-2 validity scales, F (d=0.25) and K (d=0.23), and strong significant correlations were found between RBS and F (rs=.48) and RBS and K (r=.41). When MNCD group membership was predicted using logistic regression, the RBS failed to add incrementally to F. In a separate regression to predict group membership, K added significantly to the RBS. Receiver-operating curve analysis revealed a nonsignificant area under the curve statistic, and at the ideal cutoff in this sample of %26gt;12, specificity was moderate (.79), sensitivity was low (.47), and positive and negative predictive power values at a 13% base rate were .25 and .91, respectively. Although the results of this study require replication because of a number of limitations, this study has made an important first attempt to report RBS classification accuracy statistics for predicting poor effort at a range of base rates.

• 出版日期2013-1-1