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Invalid Response Sets in MMPI and MMPI-2 Profiles of College Students

Indiana State University

Undergraduates (63 men, 68 women) were administered the Minnesota Multiphasic Personality Inventory (MMPI) and MMPI-2 in counterbalanced order, 1 week apart, to examine invalid response sets in the MMPI versus the MMPI-2, in research volunteers. A number of participants had clinically significant elevations on Infrequency (F) and Back F (Fb). Examination of Variable Response Inconsistency (VRIN), True Response Inconsistency (TRIN), and the new Infrequency-Psychopathology [F(p)] scale suggested elevations were due to endorsing highly infrequent items rather than random responding or psychopathology. When the profiles were rated for goodness-of-fit to six modal-invalid profile types, a number of profiles were possibly invalid. Gender differences were observed but few differences between the MMPI and MMPI-2 were found. However, the additional MMPI-2 validity scales and the F(p) scale improve detection of invalid response sets. Demographic and motivational factors, and recommendations for obtaining valid results from undergraduate volunteers, are discussed.

Educational and Psychological Measurement, Vol. 60, No. 6, 956-964 (2000)
DOI: 10.1177/00131640021971014


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