Objective: The purpose of this study was to examine the natural history of neurocognitive functioning following mild-moderate traumatic brain injury (TBI) from the sub-acute recovery phase to 1-year post-injury. Method: Participants were n = 36 service members who sustained a mild-moderate TBI (91.7% male) and n = 10 who sustained orthopedic injuries without brain injury (i.e., Trauma Controls; 90.0% male). Participants were evaluated within 6-months post-injury (M = 3.7, SD = 2.0) and again at 1-year post-injury (M = 11.7, SD = 0.5). Participants completed a neuropsychological test battery that included 30 common neurocognitive measures. Participants were excluded for poor effort. Results: In the Sub-acute phase, compared to the TC group, lower scores (i.e., significant differences [p < .05] and/or meaningful effect sizes [d>.35]) were found in the TBI group on measures of verbal fluency, visual scanning, and executive functioning (d = .35-.93); with higher scores on measures of attention...

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