Detection of feigned cognitive dysfunction using special malinger tests: a simulation study in naïve and coached malingerers

M. Jelicic; H.L.G.J. Merckelbach; I.E.L. Candel; E.G. Geraerts

doi:10.1080/00207450600934697

Detection of feigned cognitive dysfunction using special malinger tests: a simulation study in naïve and coached malingerers

M. Jelicic^*, H.L.G.J. Merckelbach, I.E.L. Candel, E.G. Geraerts

^*Corresponding author for this work

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Abstract

The aim of the present study was to compare the accuracy of the Amsterdam Short Term Memory (ASTM) test with that of the Structured Inventory of the Malingered Symptomatology (SIMS) in detecting feigning of cognitive dysfunction in naive and coached participants. Ninety undergraduate students were administered the ASTM and the SIMS and asked to respond honestly (controls; n = 30), or instructed to malinger cognitive dysfunction due to head injury. Before the both instruments were administered, naive malingerers received no further information (n = 30), whereas coached malingerers were given some information about brain injury and a warning not to exaggerate symptoms (n = 30). Both tests correctly classified 90% of the naive malingerers. The ASTM detected 70% of the coached malingerers, whereas the SIMS continued to detect 90% of them. The findings suggest that coaching undermines the diagnostic accuracy of the ASTM, but does not seem to influence the accuracy of the SIMS.

Original language	English
Pages (from-to)	1185-1192
Journal	International Journal of Neuroscience
Volume	117
DOIs	https://doi.org/10.1080/00207450600934697
Publication status	Published - 1 Jan 2007

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abstract = "The aim of the present study was to compare the accuracy of the Amsterdam Short Term Memory (ASTM) test with that of the Structured Inventory of the Malingered Symptomatology (SIMS) in detecting feigning of cognitive dysfunction in naive and coached participants. Ninety undergraduate students were administered the ASTM and the SIMS and asked to respond honestly (controls; n = 30), or instructed to malinger cognitive dysfunction due to head injury. Before the both instruments were administered, naive malingerers received no further information (n = 30), whereas coached malingerers were given some information about brain injury and a warning not to exaggerate symptoms (n = 30). Both tests correctly classified 90% of the naive malingerers. The ASTM detected 70% of the coached malingerers, whereas the SIMS continued to detect 90% of them. The findings suggest that coaching undermines the diagnostic accuracy of the ASTM, but does not seem to influence the accuracy of the SIMS.",

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AU - Geraerts, E.G.

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AB - The aim of the present study was to compare the accuracy of the Amsterdam Short Term Memory (ASTM) test with that of the Structured Inventory of the Malingered Symptomatology (SIMS) in detecting feigning of cognitive dysfunction in naive and coached participants. Ninety undergraduate students were administered the ASTM and the SIMS and asked to respond honestly (controls; n = 30), or instructed to malinger cognitive dysfunction due to head injury. Before the both instruments were administered, naive malingerers received no further information (n = 30), whereas coached malingerers were given some information about brain injury and a warning not to exaggerate symptoms (n = 30). Both tests correctly classified 90% of the naive malingerers. The ASTM detected 70% of the coached malingerers, whereas the SIMS continued to detect 90% of them. The findings suggest that coaching undermines the diagnostic accuracy of the ASTM, but does not seem to influence the accuracy of the SIMS.

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