Journal article

Scoring Correction for MMPI-2 Hs Scale with Patients Experiencing a Traumatic Brain Injury: A Test of Measurement Invariance

Nathan Alkemade, Stephen C Bowden, Louis Salzman

ARCHIVES OF CLINICAL NEUROPSYCHOLOGY | OXFORD UNIV PRESS | Published : 2015

Abstract

It has been suggested that MMPI-2 scoring requires removal of some items when assessing patients after a traumatic brain injury (TBI). Gass (1991. MMPI-2 interpretation and closed head injury: A correction factor. Psychological assessment, 3, 27-31) proposed a correction procedure in line with the hypothesis that MMPI-2 endorsement may be affected by symptoms of TBI. This study assessed the validity of the Gass correction procedure. A sample of patients with a TBI (n = 242), and a random subset of the MMPI-2 normative sample (n = 1,786). The correction procedure implies a failure of measurement invariance across populations. This study examined measurement invariance of one of the MMPI-2 sca..

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