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Effects of sleep deprivation on decisional support utilisation
Maxwell Fraser1, Russell Conduit, James G Phillips
1Department of Psychology, Monash University, Clayton, 3800, Australia. mjbfraser@gmail.com
Ergonomics
|February 20, 2013
Summary
Sleep deprivation impairs decision-making, reducing confidence calibration and increasing errors, especially under time pressure. Sleep-deprived individuals struggle to effectively use decision support systems when facing time constraints.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human-Computer Interaction
Background:
- Decision support systems are increasingly prevalent.
- Understanding their efficacy under adverse conditions like sleep deprivation is crucial.
- Sleep debt can significantly impact cognitive functions essential for decision-making.
Purpose of the Study:
- To investigate how sleep debt, time pressure, and risk affect the utilization of decision aids.
- To inform the design of decision support systems for sleep-deprived users.
- To assess the impact of sleep deprivation on judgment calibration and error rates.
Main Methods:
- 19 participants were tested in both rested and sleep-deprived states.
- Participants played a computerized Blackjack task with varying response deadlines (1-4 seconds) and risk levels.
- Decision support (online advice) was provided, and mean bets indicated confidence.
Main Results:
- Sleep deprivation did not significantly alter betting amounts despite reduced confidence under time pressure or high risk, indicating impaired judgment calibration.
- Sleep-deprived participants showed slower responses at low risk and made more errors when decision support was unavailable under time pressure.
- The ability to use decision support was diminished in sleep-deprived individuals, particularly under time pressure.
Conclusions:
- Sleep deprivation impairs the effective use of decision support systems, especially when time pressure is involved.
- Cognitive deficits from sleep debt can lead to poor judgment calibration and increased errors.
- Future decision support systems need to account for the cognitive limitations imposed by sleep deprivation.
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