Incremental Validity of the Minnesota Multiphasic Personality Inventory–2 and Symptom Checklist–90–Revised With Mental Health Inpatients

Abstract

This study evaluated the incremental validity of scores from the Minnesota Multiphasic Personality Inventory—2 (MMPI-2) and the Symptom Checklist—90—Revised (SCL-90-R) in a sample of mental health inpatients originally published by Archer, Griffin, and Aiduk (1995). The incremental validity of scores from the SCL-90-R primary symptom dimensions and MMPI-2 Clinical, Content, and Restructured Clinical scales was assessed in a sample of 544 mental health inpatients using conceptually related items from the Brief Psychiatric Rating Scale (BPRS) as criteria. A series of hierarchical multiple regressions indicated that scores from the SCL-90-R primary symptom dimensions exhibited limited incremental validity (Mdn ΔR 2 = .01, range = 0—.01), whereas scores from MMPI-2 scales contributed additional information in the prediction of ratings on all but one BPRS item (Mdn ΔR 2 = .08, range = .04—.12).