Cooperation and the social brain hypothesis in primate social networks

Fuente: arXiv
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Autores principales: MacLaren, Neil G., Meng, Lingqi, Collier, Melissa, Masuda, Naoki
Formato: Preprint
Publicado: 2023
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author MacLaren, Neil G.
Meng, Lingqi
Collier, Melissa
Masuda, Naoki
author_facet MacLaren, Neil G.
Meng, Lingqi
Collier, Melissa
Masuda, Naoki
contents The social brain hypothesis states that the relative size of the neocortex is larger for species with higher social complexity as a result of evolution. Various lines of empirical evidence have supported the social brain hypothesis, including evidence from the structure of social networks. Social complexity may itself positively impact cooperation among individuals, which occurs across different animal taxa and is a key behavior for successful group living. Theoretical research has shown that particular structures of social networks foster cooperation more easily than others. Therefore, we hypothesized that species with a relatively large neocortex tend to form social networks that better enable cooperation. In the present study, we combine data on brain and body mass, data on social networks, and theory on the evolution of cooperation on networks to test this hypothesis in primates. We have found a positive effect of brain size on cooperation in social networks even after controlling for the effect of other structural properties of networks that are known to promote cooperation.
format Preprint
id arxiv_https___arxiv_org_abs_2302_00075
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Cooperation and the social brain hypothesis in primate social networks
MacLaren, Neil G.
Meng, Lingqi
Collier, Melissa
Masuda, Naoki
Physics and Society
The social brain hypothesis states that the relative size of the neocortex is larger for species with higher social complexity as a result of evolution. Various lines of empirical evidence have supported the social brain hypothesis, including evidence from the structure of social networks. Social complexity may itself positively impact cooperation among individuals, which occurs across different animal taxa and is a key behavior for successful group living. Theoretical research has shown that particular structures of social networks foster cooperation more easily than others. Therefore, we hypothesized that species with a relatively large neocortex tend to form social networks that better enable cooperation. In the present study, we combine data on brain and body mass, data on social networks, and theory on the evolution of cooperation on networks to test this hypothesis in primates. We have found a positive effect of brain size on cooperation in social networks even after controlling for the effect of other structural properties of networks that are known to promote cooperation.
title Cooperation and the social brain hypothesis in primate social networks
topic Physics and Society
url https://arxiv.org/abs/2302.00075