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Related Experiment Video

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Modulating activity in the dorsolateral prefrontal cortex alter corruption behavior: A transcranial direct current

Bonai Fan1, Wenhao Mao2, Jia Jin3

  • 1School of Public Affairs, Zhejiang University, Hangzhou, China; Zhejiang Research Base for China's Non-Public Economic Personages, Ningbo University, Ningbo, China; Business School, Ningbo University, Ningbo, China; Academy of Neuroeconomics and Neuromanagement, Ningbo University, Ningbo, China.

Behavioural Brain Research
|January 17, 2020
PubMed
Summary

Transcranial direct current stimulation (tDCS) over the dorsolateral prefrontal cortex (DLPFC) influences corruption behavior. Left DLPFC stimulation reduced dishonest behavior, while right DLPFC stimulation affected reaction times in moral decision-making.

Keywords:
Cognitive controlCorruption behaviorDLPFCEmotional processKeywordMoral judgmenttDCS

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Area of Science:

  • Neuroscience
  • Moral Psychology
  • Behavioral Economics

Background:

  • Corruption poses significant societal harm, necessitating effective prevention strategies.
  • Internal factors like moral judgment, influenced by the dorsolateral prefrontal cortex (DLPFC), play a role in corruption.
  • The DLPFC integrates emotional and cognitive processes crucial for moral judgments.

Purpose of the Study:

  • To investigate the modulatory effect of transcranial direct current stimulation (tDCS) over the DLPFC on corruption behavior.
  • To explore the distinct roles of left and right DLPFC in moral decision-making related to corruption.

Main Methods:

  • An incomplete information investment game task, based on the trust game, was employed to simulate corruption scenarios.
  • A between-subject design utilized three tDCS conditions: left anodal/right cathodal, right anodal/left cathodal, and sham stimulation.
  • Corruption rates and reaction times (RT) were measured to assess behavioral changes.

Main Results:

  • Left anodal/right cathodal tDCS significantly reduced corruption rates across both high and low entrusted amounts compared to sham.
  • Right anodal/left cathodal tDCS prolonged reaction times for dishonest responses, specifically in the high entrusted amount condition.
  • These findings suggest distinct roles for left and right DLPFC in moral judgment processes.

Conclusions:

  • Left DLPFC stimulation appears to modulate the emotional aspect of moral intuition, impacting corruption behavior rates.
  • Right DLPFC stimulation seems to influence the cognitive control aspect of moral reasoning, affecting decision-making speed.
  • The results align with dual-process theories and models of collective corruption, highlighting the DLPFC's critical role.