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When do stereotypes undermine indirect reciprocity?
Mari Kawakatsu1,2, Sebastián Michel-Mata3, Taylor A Kessinger1
1Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.
Plos Computational Biology
|March 1, 2024
Summary
Stereotypes can surprisingly increase or decrease cooperation, depending on how widely reputations are shared. This stereotyping behavior can spread, even if it harms cooperation and makes groups vulnerable.
Area of Science:
- Social psychology
- Evolutionary game theory
- Behavioral economics
Background:
- Social reputations are crucial for promoting cooperation but can be cognitively demanding to track.
- Individuals often use stereotypes (group-based reputations) as a proxy for individual reputations.
- Stereotypes are less accurate than individual reputations, potentially disrupting cooperation.
Purpose of the Study:
- To investigate the impact of stereotypes on cooperation through indirect reciprocity.
- To model how group-based reputations influence cooperation dynamics in structured populations.
Main Methods:
- Developed a theoretical model of group-structured populations.
- Simulated scenarios where individuals have either individual or stereotyped reputations.
- Analyzed the conditions under which stereotyping enhances or diminishes cooperation.
Main Results:
- Stereotype use can lead to more or less cooperation compared to individual reputations, contingent on reputation sharing.
- Individuals adapting their stereotyping propensity can lead to detrimental outcomes.
- Stereotyping behavior can become widespread and resistant to change, even when detrimental to cooperation.
Conclusions:
- Stereotypes have a complex and context-dependent effect on cooperation.
- The spread of stereotyping can undermine collective cooperation and increase vulnerability to exploitation.
- Understanding reputation dynamics is key to explaining the prevalence of stereotyping and cooperation patterns.
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