Objective: To test a model comprising explanatory (neurologic impairment, coping, personality) and mediating (resilience, self-efficacy, hope, social support) variables on psychological adjustment and burden among family caregivers of individuals with traumatic brain injury (TBI) vs spinal cord injury (SCI). Methods: Structural equation modeling with multigroup analysis. Setting: Six rehabilitation centers across New South Wales and Queensland, Australia. Participants: A total of 181 family members (N=181; 131 TBI, 50 SCI). Interventions: Not applicable.