高等经济研究院教师论文被国际权威经济学期刊接收发表

2022年10月20日

2022年10月5日，高等经济研究院助理教授Jinyeong Sohn与上海科技大学吴文豪助理教授合作的论文 "Reciprocity with Uncertainty about Others" 被经济学领域权威期刊Games and Economic Behavior 接收发表。

该论文将心理动机的不确定性引入互惠模型，并探讨其对人类行为的影响。具体来说，论文假设互惠参数受不完全信息影响，并将广义形式博弈中的顺序互惠均衡概念（Dufwenberg，2004）扩展到更广泛的不完全信息博弈中。论文在此框架下研究众多知名博弈，并发现不确定性可以减弱或加强参与者的互惠行为。论文进一步研究了不确定性如何改变标准互惠模型的均衡预测，并分别比较了参与者心理动机已知和未知这两种设置。论文进一步发现，在囚徒困境中，给定背叛的利益不大，如果参与者了解对手的互惠动机，他们更可能相互合作。

Assistant Professor Jinyeong Sohn's Paper Accepted for Publication in Games and Economic Behavior

 October 20, 2022

Jinyeong Sohn, IAER Assistant Professor, had his paper accepted for publication in Games and Economic Behavior on October 5th, 2022. Entitled "Reciprocity with Uncertainty about Others", the paper was co-authored with Wenhao WU, Assistant Professor at ShanghaiTech University.

 

The authors introduce the uncertainty of psychological motivation into a reciprocity model and explore its implications on behavior. More precisely, they assume that reciprocity parameters are subject to incomplete information and extend the Sequential Reciprocity Equilibrium concept in extensive-form games (Dufwenberg, 2004) to a broader class of incomplete information games. They use this general framework to study many well-known games and find that uncertainty could either mitigate or strengthen players' reciprocal behavior. They investigate how uncertainty changes the equilibrium predictions of the standard reciprocity model and compare two setups in which the psychological motivations are known and unknown among the players, respectively. In particular, the authors find that, in the prisoners' dilemma, players are more likely to cooperate with each other when they have information about the reciprocal motivations of their opponents, given that the benefits of defection are modest.