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Crewmember performance before, during, and after spaceflight.

Thomas H Kelly1, Robert D Hienz, Troy J Zarcone

  • 1Department of Behavioral Science, College of Medicine, University of Kentucky, Kentucky 40536-0086, USA. thkelly@uky.edu

Journal of the Experimental Analysis of Behavior
|November 3, 2005
PubMed
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Computerized performance tests can monitor astronaut well-being during spaceflight. These tests showed slight changes in task completion and response times, proving useful for assessing crew performance.

Area of Science:

  • Spaceflight physiology
  • Behavioral science
  • Human performance monitoring

Background:

  • Monitoring crewmember welfare is crucial for long-duration space missions.
  • Behavioral analysis and computerized testing are established methods for assessing human performance.
  • Previous studies utilized these methods to evaluate effects of sleep, drugs, and nutrition.

Purpose of the Study:

  • To assess the feasibility of using repeated performance testing in spaceflight.
  • To determine the sensitivity of these tests to detect changes in crew behavior during a mission.

Main Methods:

  • Four astronauts completed computerized questionnaires and performance tasks before, during, and after a 10-day space shuttle mission.
  • Tasks were scheduled to minimize interference with mission activities.

Related Experiment Videos

  • Measures included Digit-Symbol Substitution and Number Recognition tasks, alongside fatigue and arousal ratings.

    • Main Results:

    • Slight alterations were observed in Digit-Symbol Substitution completion rates and Number Recognition response times during spaceflight.
    • Astronauts reported slightly increased fatigue and arousal during the mission, with decreases postflight.
    • No clinically significant behavioral impairments were detected in any crewmembers.

    Conclusions:

    • Repeated computerized performance testing and questionnaires are feasible for monitoring astronaut behavior during spaceflight.
    • These methods are sensitive enough to detect subtle changes in performance and subjective states.
    • The approach supports the utility of technology for ensuring crew welfare on extended missions.