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Malingering on neuropsychological memory tests: potential objective indicators
L C Bernard1, W Houston, L Natoli
1Psychology Department, Loyola Marymount University, Los Angeles, CA 90045.
Abstract:
We evaluated five potential indicators of malingering on the Rey Memory Test (RMT), Hebb's Recurring Digits (HRD), the Wechsler Memory Scale-Revised (WMS-R), the Complex Figure Test (CFT), and the Auditory Verbal Learning Test (AVLT). Fifty-seven subjects were assigned randomly to either a control group or a simulated malingering group. Two indicators-discriminant functions derived from the WMS-R and from the CFT/AVLT-achieved classification accuracy of 88% and 86%, respectively, without misidentifying controls as malingerers. Among the remaining indicators, there were problems with the recommended RMT cut-off, but it and the HRD show some promise. Subjects who simulated malingering did so by suppressing performance on tasks that involve recall as well as recognition memory and are relatively easy, but not obviously so.
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