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Confinement and sleep deprivation effects on propensity to take risks
Guillaume Chaumet1, Jacques Taillard, Patricia Sagaspe
1Department of Psychology, University of Bordeaux, Bordeaux, France.
Aviation, Space, and Environmental Medicine
|February 10, 2009
Summary
Confinement and sleep deprivation impact risk-taking. Risk propensity decreases during sleep deprivation but increases impulsiveness in confined settings, affecting crew performance.
Area of Science:
- Human physiology
- Psychology
- Aerospace medicine
Background:
- Crew management requires understanding how confinement and sleep deprivation affect risk-taking.
- Extended wakefulness poses challenges to cognitive performance and decision-making.
Purpose of the Study:
- To investigate the effects of confinement and gender on risk propensity and performance during extended wakefulness.
- To analyze diurnal variations in risk-taking behavior under different sleep conditions.
Main Methods:
- A study involving 24 participants (12 men, 12 women) over 10 days, comparing a 7-day confinement period with a baseline condition.
- Monitoring risk propensity (EVAR scale) and simple reaction time task (SRTT) performance every 2.25-2.11 hours.
- Including periods of normal sleep, sleep deprivation, and recovery.
Main Results:
- Risk propensity exhibited diurnal variations with peaks and minima, which were altered after confinement.
- Sleep deprivation led to decreased risk-taking during the night, with stability the following day in confinement.
- Impulsiveness increased in both men and women under a normal sleep-wake schedule during confinement.
Conclusions:
- Sleep deprivation reduces risk-taking, but confinement under normal sleep increases impulsiveness.
- Findings highlight the complex interplay between sleep, confinement, and risk behavior in operational settings.
- Gender did not appear to be a significant factor in the observed changes in risk propensity.
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