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How feeling betrayed affects cooperation.

Pouria Ramazi1, Jop Hessel1, Ming Cao1

  • 1ENgineering and TEchnology institute Groningen (ENTEG), Faculty of Mathematics and Natural Sciences, University of Groningen, Groningen, The Netherlands.

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Summary
This summary is machine-generated.

Feelings of betrayal and guilt influence cooperation in agent populations. Reducing betrayal doesn't always boost cooperation, with effects depending on game dynamics and agent numbers.

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Area of Science:

  • Evolutionary Game Theory
  • Agent-Based Modeling
  • Social Psychology

Background:

  • Interacting self-interested agents often face dilemmas between cooperation and defection.
  • Emotions like betrayal and guilt can significantly impact decision-making in social interactions.
  • Understanding these emotional influences is crucial for predicting population-level behaviors.

Purpose of the Study:

  • To investigate how individual feelings of betrayal and guilt affect the average cooperation level in a population of self-interested agents.
  • To analyze the evolutionary dynamics of cooperation under varying emotional influences.
  • To explore the impact of adjusted payoffs in asymmetric games (Prisoner's Dilemma, Snowdrift Game) on cooperation.

Main Methods:

  • Quantifying emotions as adjusted payoffs in asymmetric game theory models.
  • Simulating agent interactions in a well-mixed population using a myopic best-response update rule.
  • Developing and analyzing two additional models where betrayal fluctuates based on encountered agents.

Main Results:

  • Decreasing betrayal in a subset of agents does not guarantee increased population cooperation.
  • The population's resistance to low-betrayal agents is limited and depends on payoff matrices and agent proportions.
  • Fluctuating betrayal factors can lead to unstable cooperation levels, but parameter tuning allows for population-wide cooperation or defection.

Conclusions:

  • Emotional factors, specifically betrayal and guilt, play a complex role in the evolution of cooperation.
  • Population dynamics are sensitive to the interplay between individual emotions, game structure, and agent interactions.
  • The study highlights the potential for manipulating emotional parameters to guide collective behavior towards cooperation or defection.