The effect of celebrity on the evolution of fairness in the ultimatum game

Lei Zheng, Youqi Li, Jingsai Zhou and Yumeng Li

Physica A: Statistical Mechanics and its Applications, 2022, vol. 585, issue C

Abstract: The evolutionary ultimatum game is a powerful paradigm to study the evolution of fairness. Most studies to date assume that a player adopts the same strategy against all his/her opponents. Apart from these works, there are also works exploring the evolution of fairness when various psychological and social factors influence strategies, but celebrity has never been considered. In this paper, we introduce the effect of celebrity, under which a player behaves more generous or stingier when faces different opponents. The celebrity of individuals in a social network is defined as their degree, and ordinary people have small degrees while celebrities have large degrees. The result shows that if ordinary people tend to be more generous to celebrities and celebrities are stingier to the ordinary, fairness will be enhanced first and gradually evolves to an over-fair level.

Keywords: Ultimatum game; Fairness; Complex network; Celebrity (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:585:y:2022:i:c:s0378437121005999

DOI: 10.1016/j.physa.2021.126326

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