MMPI-2 Short Form: Psychometric Characteristics in a Neuropsychological Setting

Abstract

A 180-item short form of the MMPI-2 (MMPI-2-180) was recently developed by Dahlstrom and Archer and has been proposed for clinical use under special circumstances. This study investigated the psychometric characteristics of the MMPI-2-180 in order to delineate its strengths, limitations, and appropriate scope of clinical application. Using a neuropsychological referral sample (N = 205), we examined accuracy of the short-form as it pertains to the following (a) the prediction of basic scale scores and profile code types, (b) the identification of high-point scales, and (c) the classification of scores as pathological (T > or = 65) or normal range. The results indicate that the MMPI-2-180 provides an unreliable basis for predicting clinical code types, identifying the high-point scale, or predicting the scores on most of the basic scales. In contrast, scores on the MMPI-2-180 are accurate predictors of whether the full-scale scores fall within the pathological range (T > or = 65). These findings suggest that (a) standard interpretive procedures involving profile configuration should not be used, in most cases, with the 180-item short-form results, (b) properly interpreted, this shortened version provides potentially useful information regarding the probable presence of various problem areas, and (c) this information is very limited when contrasted with that obtained using the complete or abbreviated (i.e., 370 item) version of the MMPI-2.

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