讲座时间：2025年12月25日（周四）13:30-15:00

讲座地点：科研楼1109

报告人： 陈滢 ，清华大学五道口金融学院博士后

主持人：李建培，对外经济贸易大学经济学院教授

讲座题目：Social Identity and Network Formation: An Experiment

摘要：Using a laboratory experiment, we study the evolution of economic networks in the context of fragmented social identity. We create societies in which members can initiate and delete links to others, and then earn payoffs from a public goods game played within their network. We manipulate whether the society initially consists of segregated or integrated identity groups, and vary whether societal mobility is high or low. Results show in-group favouritism in network formation. The effects of original network structure are long-lasting, with initially segregated societies permanently exhibiting more homophilic networks than initially integrated ones. Moreover, allowing greater social mobility results in networks becoming less rather than more integrated. This occurs in part because eviction from networks is based on out-group hostility when societal mobility is high, and on punishing free riders when mobility across groups is low.

个人简介：陈滢，清华大学五道口金融学院博士后。进站以来先后入选清华大学“水木学者”计划、国家资助博士后研究人员计划B档和中国博士后科学基金面上资助。主要研究方向包括实验经济学、行为经济学和社会经济网络。相关研究成果已发表于Games and Economic Behavior，并在2025 ESA World Meeting、ESWC2025等会议上汇报。