Evolutionary Game Model of Group Choice Dilemmas on Hypergraphs

Civilini, Andrea; Anbarci, Nejat; Latora, Vito

doi:10.1103/physrevlett.127.268301

Evolutionary Game Model of Group Choice Dilemmas on Hypergraphs

Civilini, Andrea; Anbarci, Nejat; Latora, Vito

Authors

Andrea Civilini

Professor Nejat Anbarci nejat.anbarci@durham.ac.uk
Professor

Vito Latora

Abstract

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.

Citation

Civilini, A., Anbarci, N., & Latora, V. (2021). Evolutionary Game Model of Group Choice Dilemmas on Hypergraphs. Physical Review Letters, 127(26), Article 268301. https://doi.org/10.1103/physrevlett.127.268301

Journal Article Type	Article
Acceptance Date	Nov 22, 2021
Online Publication Date	Dec 20, 2021
Publication Date	Dec 24, 2021
Deposit Date	Apr 22, 2022
Publicly Available Date	Apr 22, 2022
Journal	Physical Review Letters
Print ISSN	0031-9007
Electronic ISSN	1079-7114
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	127
Issue	26
Article Number	268301
DOI	https://doi.org/10.1103/physrevlett.127.268301
Public URL	https://durham-repository.worktribe.com/output/1209559

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Copyright Statement
Reprinted with permission from the American Physical Society: Civilini, Andrea, Anbarci, Nejat & Latora, Vito (2021). Evolutionary Game Model of Group Choice Dilemmas on Hypergraphs. Physical Review Letters 127(26): 268301. © (2021) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.