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Ego Depletion and Time Pressure Promote Spontaneous Deception:An Event-Related Potential Study.

Wei Fan1,2, Ying Yang1,2, Wenjie Zhang1,3

  • 1Cognition and Human Behavior Key Laboratory of Hunan Province, Hunan Normal University, Changsha, 410081, China1.

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Ego depletion and high time pressure increase spontaneous deception. Individuals with more self-control resources are less likely to deceive, as shown by event-related potentials (ERPs).

Keywords:
P3 amplitudedeceptionego depletiontime pressure

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Social Psychology

Background:

  • Self-control is crucial for resisting temptation and deception.
  • Ego depletion, a state of reduced self-control, may impair ethical decision-making.
  • Time pressure is a known factor influencing deceptive behavior.

Purpose of the Study:

  • To investigate the impact of ego depletion on spontaneous deception.
  • To examine the role of time pressure in deceptive tendencies.
  • To explore the neural correlates of deception using event-related potentials (ERPs).

Main Methods:

  • Participants underwent ego depletion manipulation using the Stroop Color-Word test.
  • Deceptive tendencies were assessed using a visual perception task.
  • Event-related potentials (ERPs), specifically P3 amplitude, were measured.

Main Results:

  • The ego-depleted group exhibited a higher propensity for deception and larger P3 amplitudes.
  • Participants under no time pressure were more likely to deceive and showed larger P3 amplitudes compared to the high-time pressure group.
  • These findings suggest that depleted self-control and time pressure facilitate spontaneous deception.

Conclusions:

  • Sufficient self-control resources enable individuals to resist temptation and avoid self-serving deception.
  • Increased time pressure significantly elevates the likelihood of engaging in deceptive acts.
  • Deception can be an automatic and spontaneous response under conditions of ego depletion and time pressure.