Accession Number : ADA292324

Title :   Some Performance Effects of Age and Low Blood Alcohol Levels on a Computerized Neuropsychological Test.

Descriptive Note : Final rept.,

Corporate Author : FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF AVIATION MEDICINE

Personal Author(s) : Schroder, David J. ; Harris, Howard C., Jr. ; Collins, William E. ; Nesthus, Thomas E.

PDF Url : ADA292324

Report Date : FEB 1995

Pagination or Media Count : 38

Abstract : COGSCREEN is a computerized test battery developed for the Federal Aviation Administration as an airman neuropsychological screening instrument for cognitive functioning. This study explored a multifaceted application of the sensitivity of the battery to potential differences in performance capabilities, current civil aviation interest in the performance effects of low levels of blood alcohol, and the potential significance of age on cognitive performance. Nine of 11 basic COGSCREEN tests were used with 60 subjects divided into three age groups, 27-32, 42-47, and 57-62 years. Twelve subjects within each age category (N=36) comprise an alcohol group; 8 subjects within each age category (N=24) comprised a control group. Subjects were given four 30-minute sessions of training on the task battery during one afternoon and participated in experimental sessions on the next afternoon. Experimental sessions comprised a pre-drinking (baseline) and three post-drinking sessions targeted to breath alcohol (BrAC) levels of 0.04, 0.027, and 0.014% for the alcohol group; each control subject received a placebo. The results yielded statistically significant age effects on 20 of 25 measures of performance acrossthe9 tas 5 for the pre-drinking sessions favoring the younger age group, using the entire subject population (N=60). An analysis using only the control subjects of age effects on 18 of the 25 measures of performance on both the baseline and the post-baseline sessions; whereas, the analysis the alcohol subjects (N=36) found significant age differences on 15 of 25 scores for the pre-drinking session and only 13, 11, and 10 of 25 on the post-drinking sessions respectively.

Descriptors :   *PSYCHOLOGY, *ALCOHOLS, *BLOOD VOLUME, TEST AND EVALUATION, CONTROL, PERFORMANCE(ENGINEERING), COGNITION, AGING(PHYSIOLOGY), POPULATION, LOW LEVEL, INSTRUMENTATION, COMPUTER APPLICATIONS, CIVIL AVIATION, NEUROLOGY, AVIATION PERSONNEL, BLOOD, PLACEBOS.

Subject Categories : Psychology
      Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE