Belief Diversity and Cooperation

Fuente: arXiv
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Main Authors: Lukyanov, Georgy, Li, David
Format: Preprint
Published: 2025
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author Lukyanov, Georgy
Li, David
author_facet Lukyanov, Georgy
Li, David
contents This paper studies a two-player game in which the players face uncertainty regarding the nature of their partner. In this variation of the standard Prisoner's Dilemma, players may encounter an 'honest' type who always cooperates. Mistreating such a player imposes a moral cost on the defector. This situation creates a trade-off, resolved in favor of cooperation if the player's trust level, or belief in their partner's honesty, is sufficiently high. We investigate whether an environment where players have explicit beliefs about each other's honesty is more or less conducive to cooperation, compared to a scenario where players are entirely uncertain about their partner's beliefs. We establish that belief diversity hampers cooperation in environments where the level of trust is relatively low and boosts cooperation in environments with a high level of trust.
format Preprint
id arxiv_https___arxiv_org_abs_2509_08851
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Belief Diversity and Cooperation
Lukyanov, Georgy
Li, David
Theoretical Economics
This paper studies a two-player game in which the players face uncertainty regarding the nature of their partner. In this variation of the standard Prisoner's Dilemma, players may encounter an 'honest' type who always cooperates. Mistreating such a player imposes a moral cost on the defector. This situation creates a trade-off, resolved in favor of cooperation if the player's trust level, or belief in their partner's honesty, is sufficiently high. We investigate whether an environment where players have explicit beliefs about each other's honesty is more or less conducive to cooperation, compared to a scenario where players are entirely uncertain about their partner's beliefs. We establish that belief diversity hampers cooperation in environments where the level of trust is relatively low and boosts cooperation in environments with a high level of trust.
title Belief Diversity and Cooperation
topic Theoretical Economics
url https://arxiv.org/abs/2509.08851