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How peer influence shapes value computation in moral decision-making.

Hongbo Yu1, Jenifer Z Siegel1, John A Clithero2

  • 1Department of Psychology, Yale University, New Haven, CT, USA.

Cognition
|March 19, 2021
PubMed
Summary
This summary is machine-generated.

Peer influence shapes moral behavior by altering the perceived value of choices to align with others' goals. This study reveals how observing peers' moral decisions impacts individual preferences and decision-making processes.

Keywords:
Bayesian hierarchical modelingDrift diffusion modelGoalMoral decision-makingSocial influence

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Area of Science:

  • Psychology
  • Cognitive Science
  • Neuroscience

Background:

  • Moral behavior is known to be influenced by social factors, particularly peer interactions.
  • Understanding the mechanisms of peer influence on moral decision-making is crucial for social and developmental psychology.

Purpose of the Study:

  • To investigate how information from peers influences individual moral preferences.
  • To determine if peer influence alters the value computation of moral choices based on peers' inferred goals.

Main Methods:

  • Utilized drift-diffusion modeling to analyze decision-making processes.
  • Conducted two studies involving participants observing and making moral decisions after exposure to prosocial or antisocial peer behavior.

Main Results:

  • Participants accurately inferred peer goals from observed moral decisions.
  • Exposure to peer moral decisions shifted participants' own preferences to align with those of the observed peers.
  • Peer influence affected value computation by increasing the weight of choice attributes aligned with peer goals, independent of initial choice bias.

Conclusions:

  • Peer influence significantly alters the subjective value assigned to different choice attributes in moral decision-making.
  • Findings suggest mechanisms for both promoting prosocial and mitigating antisocial peer influence on moral behavior.