 Patients who are hospitalized and who have suffered mild TBI loss of consciousness or post-traumatic amnesia; Glasgow Coma Score 13-15; admitted within 24 hours of injury; able to read, speak, and understand English who do not have pre-injury dementia or significant cognitive impairment will undergo computerized neuropsychologic testing using a previously validated tool that has been effective in sports-related mild TBI. Sequential testing will be performed during recovery and patients who report disabling symptoms andor functional impairment will be compared to patients who recover uneventfully. Goal is to identify those parameters that predict early who may suffer long term sequelae or functional impairment and therefore benefit from early cognitive rehabilitation. Secondary goals are to establish objective parameters for functional recovery after mild TBI. 