Abstract

It is relatively unclear if underreporting (UR) detected by Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF) L-r (Uncommon Virtues) and K-r (Adjustment Validity) scale scores generalizes to score distortion on criterion measures differently based on test-takers having scored highly on L-r, K-r, or both. Thus, this study reanalyzed the correctional sample of 632 men previously presented by Forbey and colleagues and defined UR groups as high scores on L-r alone (n = 89), K-r alone (n = 45), or both (n = 29). Groups were compared on selected MMPI-2-RF and criterion scales assessing internalizing, externalizing, and thought dysfunction difficulties using analysis of variance (ANOVA) and post hoc tests. Results suggested that UR generalized to score distortion on collateral measures, with K-r outperforming L-r in the prediction of this generalizability on all but measures of specific externalizing difficulties. However, having elevations on both L-r and K-r resulted in the strongest pattern of generalizability.

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