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Sleepy Punishers Are Harsh Punishers.

Kyoungmin Cho1, Christopher M Barnes1, Cristiano L Guanara2

  • 11 Department of Management and Organization, Foster School of Business, University of Washington.

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Sleep deprivation significantly impacts judicial decisions, leading judges to impose harsher sentences. This study reveals how reduced sleep in judges correlates with increased punishment severity in federal courts.

Keywords:
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Area of Science:

  • Legal Psychology
  • Sleep Science
  • Criminology

Background:

  • Judicial sentencing is crucial for social order but can be influenced by non-legal factors.
  • Understanding these external influences is key to ensuring fair and consistent justice.

Purpose of the Study:

  • To investigate the hypothesis that sleep deprivation affects judicial sentencing severity.
  • To explore the impact of sleep loss on legal decision-making.

Main Methods:

  • Analysis of archival data from U.S. federal courts.
  • Utilizing the natural quasi-experiment of daylight saving time shifts to assess sleep deprivation effects.
  • Comparing judicial punishment severity before and after the time change.

Main Results:

  • Judges imposed significantly longer sentences when sleep-deprived due to the spring daylight saving time transition.
  • Evidence supports the link between reduced sleep and increased sentence severity.

Conclusions:

  • Sleep deprivation is a demonstrable factor influencing judicial sentencing.
  • Findings highlight the need to consider physiological states in legal contexts to maintain justice.