A Meta-Analysis of Malingering on the MMPI-2

Abstract

With the widespread adoption of the MMPI-2 as an assessment tool, psychologists are frequently required to make important decisions regarding the validity of its clinical profiles and a determination of malingering. Ten MMPI-2 fake-bad scales/indexes are reviewed with respect to their potential usefulness in the evaluation of feigning mental illness. In addition, a meta-analysis of the MMPI-2 was performed. Of the six indicators with sufficient research, we found that the instrument's F, F-K, and O-S had very strong effect sizes, which were maintained across both nonclinical controls and psychiatric groups. Specific recommendations are made for clinical practice and applied research.