MMPI-2-RF : clinical utility with a traumatic brain injury population
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The 567-item MMPI-2 is the most widely used personality measure; it requires a sixth-grade reading level, takes 60-90 minutes to administer, and reports robust psychometrics. However, traumatic brain injury (TBI) sequelae can cause cognitive deficits that affect test-taking abilities and item endorsement during differential diagnoses of neurological and personality factors. Therefore, this study examined the clinical utility of the shortened 338-item MMPI-2-RF inventory with a post-acute TBI population as a practical alternative. The MMPI-2-RF requires a fifth-grade reading level and takes 35-50 minutes to administer. The MMPI-2-RF also includes revised versions of the MMPI-2 Validity Scales and new substantive scales that may better psychometrically account for personality in TBI sequelae, such the Somatic/Cognitive Scales. This study conducted an incremental validity analysis of the MMPI-2-RF with a non-litigating, post-acute care TBI population in Central Texas. The goal of the study was to explore the measure’s performance, or its ability to capture functional dimensions in a TBI sample. More specifically, the study examined the construct validity of MMPI-2 to MMPI-2-RF Validity and Restructured Clinical Scales, and criterion validity for the Somatic/Cognitive Scales with neuropsychological and neurobehavioral functioning measures. An archival neuropsychological database (N = 60) was analyzed of patients who participated in TBI rehabilitation treatment at a Central Texas hospital. MMPI-2-RF profiles were retrospectively scored with MMPI-2 archival data. Statistical analysis between MMPI-2 to MMPI-2-RF Validity and Restructured Clinical Scales was conducted. MMPI-2-RF Somatic/Cognitive Scales and criterion measures of Weschler Adult Intelligence Scale, 4th Edition (WAIS-IV), The Weschler Memory Scales, 4th Edition (WMS-IV), The Booklet Category Test, 2nd Edition (BCT), and the Neurobehavioral Functioning Inventory (NFI) were examined. Patient demographics and measurement qualities were reported with the sample.