Profile Analyses of the Personality Assessment Inventory Following Military-Related Traumatic Brain Injury

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Personality Assessment Inventory (PAI) profiles were examined in 160 U.S. service members (SMs) following mild–severe traumatic brain injury (TBI). Participants who sustained a mild TBI had significantly higher PAI scores than those with moderate–severe TBI on eight of the nine clinical scales examined. A two-step cluster analysis identified four PAI profiles, heuristically labeled “High Distress”, “Moderate Distress”, “Somatic Distress,” and “No Distress”. Postconcussive and posttraumatic stress symptom severity was highest for the High Distress group, followed by the Somatic and Moderate Distress groups, and the No Distress group. Profile groups differed in age, ethnicity, rank, and TBI severity. Findings indicate that meaningful patterns of behavioral and personality characteristics can be detected in active duty military SMs following TBI, which may prove useful in selecting the most efficacious rehabilitation strategies.

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