Detecting Malingered and Defensive Responding on the MMPI-2 in a Forensic Inpatient Sample

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Abstract
The purpose of this study was to examine the effectiveness of the various validity scales and indices on the MMPI-2 to detect malingered (fake-bad), and defensive (fake-good) responding. The entire sample consisted of 165 college students who completed the MMPI-2 under one of three conditions--fake-bad, fake-good, or respond honestly--and 173 forensic inpatients who completed the test as part of a routine evaluation. To detect faking-good and faking-bad, cutting scores for the validity scales and indices were established from the fake-good and fake-bad groups and were compared to the honest and patient groups. Corresponding sensitivity and specificity rates were then determined. Four validity indicators appeared to be moderately effective-at detecting fake-bad profiles: F, F--K, the MMPI-2 version of revised Gough Dissimulation Scale, and Wiener's Obvious-Subtle index, whereas the fake-good indicators were much less effective--only F--K and the Obvious-Subtle index appeared to have moderate utility.

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