A) accuracy, B) Impulsivity, C) Inaccuracy, and D) Response Inhibition, for male animals from the STD and IMP cohorts at the pre-injury (black bars) and post-injury (white bars) test sessions. Overall accuracy increased across all cohorts from the pre-injury session to the post-injury session, but the magnitude of change was greater for sham animals. Males in the STD cohort exhibited a reduction in incorrect nose pokes with increased training but animals in the IMP cohort actually exhibited an increase in incorrect nose pokes. Cohort and mTBI increased impulsivity when compared to STD-sham animals. Finally, all males except IMP-mTBIs demonstrated improvements in latency to nose poke on the NOGO trials, but again the magnitude was greatest for STD-shams (α significant effect of IMP at pre-injury, β significant effect of IMP at post-injury, x significant effect of mTBI, * significant effect of testing period, all p < .05).