title: Automated Neuropsychological Assessment Metrics: repeated assessment with two military samples.
abstract: BACKGROUND
  U.S. military troops deploying to war zones are currently administered the Automated Neuropsychological Assessment Metrics (ANAM4) Traumatic Brain Injury (TBI) Battery to establish individual neurocognitive performance baselines. In part, the utility of the ANAM4 TBI Battery baseline measurement depends on test-retest reliability of this instrument. The purpose of this report was to evaluate performance following multiple administrations of the ANAM4 TBI Battery: does performance in a repeated measures paradigm constitute a stable, interpretable indication of baseline neurocognitive ability?
  
  
  METHODS
  The data presented here are from the ANAM4 TBI Battery administered four times to a group of U.S. Marines in Study 1 and eight times to a group of New Zealand Defence Force personnel in Study 2.
  
  
  RESULTS
  The results show practice effect in five of six performance subtests in both Study 1 and Study 2.
  
  
  CONCLUSIONS
  Results are consistent with expectations that multiple test sessions are required to reach stable performance on some computerized tasks. These results have implications for taking ANAM4 TBI Battery practice effects into account in test administration and in data interpretation.
authors.affiliation: Naval Medical Research Center, Silver Spring, MD 20910-7500, USA. stephanie.eonta@med.navy.mil
authors.forename: Stephanie E
authors.initials: SE
authors.lastname: Eonta
authors.forename: Walter
authors.initials: W
authors.lastname: Carr
authors.forename: Joseph J
authors.initials: JJ
authors.lastname: McArdle
authors.forename: Jason M
authors.initials: JM
authors.lastname: Kain
authors.forename: Charmaine
authors.initials: C
authors.lastname: Tate
authors.forename: Nancy J
authors.initials: NJ
authors.lastname: Wesensten
authors.forename: Jacob N
authors.initials: JN
authors.lastname: Norris
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Balkin
authors.forename: Gary H
authors.initials: GH
authors.lastname: Kamimori
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008889:Military Personnel; D009483:Neuropsychological Tests / Q000592:standards*; D009520:New Zealand; D011930:Reaction Time; D015203:Reproducibility of Results; D014481:United States; D055815:Young Adult