Sleep loss and risk-taking behavior: a review of the literature.
Level 1 - systematic review of randomized trials
Systematic review of 23 empirical studies examining sleep loss and risk-taking behavior
PubMed 23286526 · doi:10.1080/15402002.2012.703628
What was done
The authors conducted a review of empirical literature evaluating the relationship between sleep loss and risk-taking behavior (RTB). Twenty-three studies met defined inclusion criteria and were analyzed for associations, causal evidence, potential neural mediators, and methodological moderators.
What was found
The abstract reports no numerical effect sizes or quantitative statistics. Across the 23 included studies, sleep loss was positively associated with risk-taking behavior, with evidence indicating a causal link. Reduced functioning of the ventromedial prefrontal cortex (VMPFC) was identified as a possible mediator, and the type of risk-taking measure (general vs. specific) acted as a potential moderator.
Why it matters
This review aggregates empirical evidence showing that sleep deprivation promotes risky decision-making, highlighting prefrontal cortical compromise as a key mechanistic pathway.
Limits
The abstract does not report point estimates, confidence intervals, heterogeneity statistics, or sample demographics. It does not differentiate between acute total sleep deprivation and chronic partial sleep restriction, nor does it quantify the magnitude of the risk-taking increase.
Cited by
- supports During sleep deprivation, emotional reactivity is heightened and cognitive control is suppressed, leading to a shift in economic preferences toward taking larger and more frequent risks.