Psychometric data for the NFL neuropsychological test battery.

As part of a comprehensive league-wide study of concussion, the National Football League's Committee on Mild Traumatic Brain Injury sponsored a neuropsychological testing program from 1996 through 2001. Nearly 1,000 athletes participated voluntarily in the study. Traditional paper-and-pencil neuropsychological tests were used for baseline assessment. Neuropsychological tests used in the study included the Hopkins Verbal Learning Test-Revised, the Brief Visuospatial Memory Test-Revised, Trail-Making Tests (Parts A and B), and the Controlled Oral Word Association Test. We present a factor analysis of these baseline data on 513 athletes who completed all of the neuropsychological tests and present normative psychometric data on the multiple baseline tests employed.