Currently, the Ohio State University TBI Identification Method (OSU-TBI-ID) is the only published semistructured interview to have demonstrated that a retrospective TBI interview can produce psychometrically sound data.17 ,18 (link) One can both qualify and quantify the number of injuries by assessing items including, but not limited to, the number of TBIs, severity, and age at first injury.18 (link) The 3 most significant injuries are further examined to ascertain age of onset and duration of symptoms experienced. Preliminary interrater reliabilities and predictive validity have been established by the developers of this instrument.17 ,18 (link) The OSU-TBI-ID has limitations for the assessment of military acquired TBIs because it does not specifically probe for blast exposure and related injuries, and it was not designed to parse out physiological from psychological responses to trauma (common to combat TBI). Consequently, there is a clinical and research need for a TBI assessment tool designed to capture the unique experiences of brain injuries sustained by OEF/OIF veterans. Comparison of the BAT-L with the only other validated TBI assessment instrument will provide critical information regarding the validity of this novel tool.