Computerized tests used to determine whether football players and other athletes can return to competition following a concussion aren't always reliable and arguably are relied upon too much, a study published this week in the Journal of Clinical and Experimental Neuropsychology concludes. The study's authors, according to an announcement, find that some tests don't measure functional and metabolic impairments of the brain. What's more, cognitive performance measured by the most scientifically-validated of the tests currently being used--Immediate Post-concussion Assessment and Cognitive Testing (ImPACT)--usually normalizes within three weeks of a concussion, according to the authors, but that doesn't necessarily mean the injured athlete being tested is fully healed. Additionally, they say, such tests can actually harm recovery. Announcement