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Evolutionary Game Model of Group Choice Dilemmas on Hypergraphs

journal contribution
posted on 2023-01-04, 23:19 authored by A Civilini, Nejat AnbarciNejat Anbarci, V Latora
We introduce an evolutionary game on hypergraphs in which decisions between a risky alternative and a safe one are taken in social groups of different sizes. The model naturally reproduces choice shifts, namely the differences between the preference of individual decision makers and the consensual choice of a group, that have been empirically observed in choice dilemmas. In particular, a deviation from the Nash equilibrium toward the risky strategy occurs when the dynamics takes place on heterogeneous hypergraphs. These results can explain the emergence of irrational herding and radical behaviors in social groups.

History

Journal

Physical Review Letters

Volume

127

ISSN

0031-9007

eISSN

1079-7114

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