Detection of feigned posttraumatic stress disorder: A meta-analysis of the Minnesota Multiphasic Personality Inventory-2 (MMPI-2).
2020
OBJECTIVE This study synthesized the results of 22 studies (N = 3,912) of feigned posttraumatic stress disorder (PTSD) symptoms that used the Minnesota Multiphasic Personality Inventory-2 (MMPI-2). METHOD Robust variance estimation was used to analyze variables that affected the accuracy of scales used to detect feigned symptoms. RESULTS The FB scale (g = 1.60), the Obvious-Subtle scale (g = 1.57), and the Gough Dissimulation Index (F-K; g = 1.56) produced very large effect sizes after controlling for study design. Large and significant effect sizes were also observed for the F scale (g = 1.46), the FP scale (g = 1.43), and the Ds scale (g = 1.39). CONCLUSIONS The findings of this study suggest that the MMPI-2 validity scales are useful for identifying individuals who are exaggerating or fabricating psychological symptoms. However, there were differences across validity scales and study designs, with some scales demonstrating stronger performances than others. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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