This article examines the outcome of traumatic brain injury (TBI) in adults 50 years and older. The literature concerning prognostic variables such as age and severity of injury is reviewed in relation to mortality and morbidity. Research is then presented on the cognitive and behavioral sequelae Identified by the authors in their two-center study. Findings on the early stages of recovery indicate that older adults display impairments in attention, memory, language, and executive processing. Moreover, family members observe changes involving cognition, mood, and social functioning. It is concluded that although TBI poses a significant problem for older adults, little systematic data have been collected focusing on their sequelae, recovery patterns, and rehabilitation needs. The neurobehavioral outcome of TBI in this subpopulation deserves extensive study because of injury and extra-injury differences such as pathophysiology, medical comorbidities, and psychosocial supports that differentiate these patients from young survivors