Comparison of the Effectiveness of Two Versions of the Rey Memory Test in Discriminating between Actual and Simulated Memory Impairment, with and without the Addition of a Standard Memory Test

Abstract

The superiority of the modified 16-item Rey memory test over the original 15-item test has yet to be established in relation to the detection of feigned memory deficits. This study compares the effectiveness of these two versions of the test in combination with a standard memory test. Sixty-four participants, equally divided into "controls" and "simulators", and 32 "memory-impaired" volunteers completed the WAIS-III Digit Span test and either the 15-item or 16-item Rey test. The median scores of the simulators were worse than those of both the controls and the memory-impaired subjects on two types of score on the 16-item test compared to just one on the 15-item test. However, combining the total score from the 16-item test with the digits forward span accurately detected 63% of simulators (with only 6% of nonsimulators wrongly classified as simulators). This performance was better than that obtained from any of the test scores taken singly or from any other combination of a digit span score with a Rey score. It is concluded that the addition of a standard memory test to the Rey memory test improves the detection of individuals feigning memory impairment.

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