Does the Neurological Damage from a Traumatic Brain Injury Invalidate Measures of Psychopathology Such as the MMPI-2?

Abstract

Objective: The Gass correction model removes 14 items from the MMPI-2 which refer to neurological damage when assessing a person suffering a traumatic brain injury (TBI). Previous analysis supported ongoing inclusion of the five correction items from MMPI-2 Hs scale in individuals who suffered a TBI. This study investigates the remaining nine correction model items on the Hy and Sc scales. Participants: A sample of patients with a TBI (n = 242), and the MMPI-2 normative sample (n = 2,600). Design: Main Measures: This is a cross-sectional study testing measurement invariance of two MMPI-2 scales (Hy and Sc) between the TBI and normative samples. Results: Factor models for each scale were defi..