SHORT REPORT Does history of concussion affect current cognitive status?

The association between self reported history of concussion and current neurocognitive status is controversial. Some football studies suggest that athletes with a history of concussion display cognitive impairment relative to athletes with no history of concussion, but other studies have not been able to reproduce such findings. This study shows that there is no relation between the number of previous self reported episodes of concussion and current cognitive state, directly contradicting the findings of previous research. T he acute consequences of sports related concussion include physical signs and symptoms1 and cognitive dysfunction,2 which typically resolve within 7–10 days of the injury.3 4 The vast majority of research in this area has focused on the short term effects of concussion. This has le