Chronic traumatic encephalopathy (CTE) is a neurodegenerative syndrome that has been linked to serious psychiatric symptoms, including depression, aggression, and suicidal behavior. This review critically examines the extant research on the behavioral manifestations of CTE and concludes that the paucity of longitudinal prospective studies on CTE, combined with a lack of research-accepted diagnostic criteria for identifying individuals who are considered at risk for CTE, makes it difficult to reliably establish a causal relationship between CTE and the onset of behavioral health problems. Selection and reporting bias and inconsistency in data collection methods are other concerns. To advance the field, there is a critical need for more empirical research on the behavioral manifestations of CTE. Recommendations and intervention models are also discussed.

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