A Validation Study of M-FAST (Miller-Forensic Assessment of Symptoms Test)

The purpose of this study is to introduce the Miller Forensic Assessment of Symptoms Test(M-FAST) which was developed for detecting malingered mental illness and to test the reliability and validity of M-FAST using Korean population. For this purpose, undergraduate students(n=92) and criminal defendants who were referred to forensic examination(n=66) were included in the study. Reliability analysis of 25 M-FAST items produced an alpha coefficient of .90. Confirmatory factor analysis for testing 7 factor model of M-FAST was also examined. Correlation analysis between M-FAST total score, scale scales and validity scales of MMPI-2 found evidence of construct validity. Total data were reclassified into two sub-groups(honest respondents group and malingered group), and the independent sample t-test was conducted to determine the difference in the M-FAST total score and 7 scale scores between two groups. The results revealed that the honest respondents group showed higher M-FAST total score and scale scores than malingered group. ROC analysis yielded an AUC of .949(SE=.017, p<.001). Finally, the optimum M-FAST total cut-off score was revealed as 6 points(sensitivity=.895, specificity=.915). These results indicates that M-FAST has high reliability and validity in this study using Korean population.

keywords: M-FAST, 꾀병, 범죄자, 정신병리, MMPI-2, M-FAST, malingering, feigning, mental illness, validity, M-FAST, malingering, feigning, mental illness, validity

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Article Contents

Vol.28 No.2

A Validation Study of M-FAST (Miller-Forensic Assessment of Symptoms Test)

Abstract

Reference

Korean Journal of Psychology: General