title: The Immediate Post-Concussion Assessment and Cognitive Testing battery and traditional neuropsychological measures: a construct and concurrent validity study.
abstract: OBJECTIVE
  This study examined the construct and concurrent validity of ImPACT, a computerized neuropsychological test battery used for evaluating sports-related concussion.
  
  
  METHODS
  Approximately 100 neurologically intact undergraduates completed ImPACT and a battery of traditional neuropsychological tests utilized by the National Football League (NFL).
  
  
  METHODS
  Participants completed the two batteries in a counterbalanced order. Factor analyses examined the component structure of ImPACT and the NFL battery's factor structure. Correlational analyses assessed relationships among variables within and across the two batteries.
  
  
  RESULTS
  A four-factor solution explaining 70% of variance was found with the NFL battery, including general memory, mental processing speed, verbal memory and processing speed and auditory and verbal working memory. A five-factor solution explaining 69% of variance was found with the ImPACT battery, with components assessing forced choice efficiency, verbal and visual memory, inhibitory cognitive abilities, visual processing abilities with a memory component and a factor with a single loading from Colour Match Total Commissions. Correlations revealed a range of significant and non-significant correlations between the two batteries.
  
  
  CONCLUSIONS
  While both batteries overlap regarding their assessed constructs (e.g. memory, inhibitory cognitive abilities) notable differences in their factor structures were present as well.
authors.affiliation: CoxHealth, Department of Psychological Services, Springfield, MO, USA. brittany.allen1@coxhealth.com
authors.forename: Brittany J
authors.initials: BJ
authors.lastname: Allen
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Gfeller
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001265:Athletic Injuries / Q000523:psychology*; D001924:Brain Concussion / Q000523:psychology*; D003072:Cognition Disorders / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests / Q000592:standards*; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time; D015203:Reproducibility of Results