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Do exhausted primary school students cheat more? A randomized field experiment.

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Self-control depletion, or ego-depletion, was tested in a large-scale experiment. Results show that depleting self-control increases fraudulent cheating behavior, providing causal evidence for the ego-depletion effect.

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Area of Science:

  • Psychology
  • Behavioral Economics

Background:

  • The existence of the ego-depletion effect has been debated for two decades.
  • Understanding the scope conditions of ego-depletion theory is crucial for its validity.

Purpose of the Study:

  • To explore the scope conditions of ego-depletion theory.
  • To provide causal evidence for the ego-depletion effect.
  • To offer practical guidance for educational policy.

Main Methods:

  • A randomized experiment was conducted where students' self-control was depleted using a cognitively demanding task.
  • The effect of depleted self-control on subsequent fraudulent cheating behavior was measured using an incentivized dice-roll task.
  • A large-scale, preregistered field experiment simulated real-life situations to test ego-depletion.

Main Results:

  • The study hypothesized that students with depleted self-control would exhibit increased fraudulent cheating.
  • Data confirmed the hypothesis, providing causal evidence for the ego-depletion effect.
  • Treated students cheated more than the control group.

Conclusions:

  • The findings offer new insights into the scope conditions of ego-depletion theory.
  • Methodological information is provided for future research on self-control and decision-making.
  • Practical guidance for educational policy regarding self-control and academic integrity is suggested.