Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete

Altruistic behavior is known to be conditional on the level of altruism of others. However, people often have no information, or incomplete information, about the altruistic reputation of others, for example when the reputation was obtained in a different social or economic context. As a consequence...

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Main Authors: Jacintha Ellers, Nadia C. E. van der Pool
Format: Article
Language:English
Published: SAGE Publishing 2010-01-01
Series:Evolutionary Psychology
Online Access:https://doi.org/10.1177/147470491000800105
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author Jacintha Ellers
Nadia C. E. van der Pool
author_facet Jacintha Ellers
Nadia C. E. van der Pool
author_sort Jacintha Ellers
collection DOAJ
description Altruistic behavior is known to be conditional on the level of altruism of others. However, people often have no information, or incomplete information, about the altruistic reputation of others, for example when the reputation was obtained in a different social or economic context. As a consequence, they have to estimate the other's altruistic intentions. Using an economic game, we showed that without reputational information people have intrinsic expectations about the altruistic behavior of others, which largely explained their own altruistic behavior. This implies that when no information is available, intrinsic expectations can be as powerful a driver of altruistic behavior as actual knowledge about other people's reputation. Two strategies appeared to co-exist in our study population: participants who expected others to be altruistic and acted even more altruistically themselves, while other participants had low expected altruism scores and acted even less altruistically than they expected others to do. We also found evidence that generosity in economic games translates into benefits for other social contexts: a reputation of financial generosity increased the attractiveness of partners in a social cooperative game. This result implies that in situations with incomplete information, the fitness effects of indirect reciprocity are cumulative across different social contexts.
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spelling doaj.art-6e421d8bee8e40b193ed7721834769bb2024-02-18T17:04:51ZengSAGE PublishingEvolutionary Psychology1474-70492010-01-01810.1177/14747049100080010510.1177_147470491000800105Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is IncompleteJacintha EllersNadia C. E. van der PoolAltruistic behavior is known to be conditional on the level of altruism of others. However, people often have no information, or incomplete information, about the altruistic reputation of others, for example when the reputation was obtained in a different social or economic context. As a consequence, they have to estimate the other's altruistic intentions. Using an economic game, we showed that without reputational information people have intrinsic expectations about the altruistic behavior of others, which largely explained their own altruistic behavior. This implies that when no information is available, intrinsic expectations can be as powerful a driver of altruistic behavior as actual knowledge about other people's reputation. Two strategies appeared to co-exist in our study population: participants who expected others to be altruistic and acted even more altruistically themselves, while other participants had low expected altruism scores and acted even less altruistically than they expected others to do. We also found evidence that generosity in economic games translates into benefits for other social contexts: a reputation of financial generosity increased the attractiveness of partners in a social cooperative game. This result implies that in situations with incomplete information, the fitness effects of indirect reciprocity are cumulative across different social contexts.https://doi.org/10.1177/147470491000800105
spellingShingle Jacintha Ellers
Nadia C. E. van der Pool
Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete
Evolutionary Psychology
title Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete
title_full Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete
title_fullStr Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete
title_full_unstemmed Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete
title_short Altruistic Behavior and Cooperation: The Role of Intrinsic Expectation When Reputational Information is Incomplete
title_sort altruistic behavior and cooperation the role of intrinsic expectation when reputational information is incomplete
url https://doi.org/10.1177/147470491000800105
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