Friendships and Social Networks in an Individual-Based Model of Primate Social Behaviour
Résumé
The individual-based model GrooFiWorld proposes a parsimonious theory explaining the complexbehaviour of macaque societies. It suggests that the socio-spatial structure of the group underlies the emergenceof complex behaviour. A spatial structure with dominants at the center and subordinates at the peripheryemerges due to aggression. This structure influences the distribution of social interactions: individuals interactmore with close-by partners and thus several behavioural patterns emerge. In GrooFiWorld, however, individualshave no preferential interactions; whereas in primates, individuals prefer interactions with ’friends’. Thedistribution of interactions, then, may be influenced by ’friendships’ rather than spatial structure. To studythis, here, we omitted space from the model and investigated the eects of ’friendships’ on the emergence ofsocial behaviour and network structure. Results show that ’friendships’ promote cooperation but fail to produceother patterns characteristic of macaques. This highlights the importance that spatial structure may havein structuring macaque societies.
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