时间：2020 年 09 月 30 日 14:00-16:00.

地点：沙河校区主教104

主讲人：刘潇副教授

主讲人简介：刘潇博士，清华大学经济与管理学院副教授，美国密歇根大学安娜堡分校博士。主要研究兴趣包括公共政策，博弈论，信息经济学，实验经济学和行为经济学。她的研究成果发表在Games and Economic Behavior, Management Science, Experimental Economics, Journal of Economic Behavior and Organization等学术刊物上，主持过国家自然科学等多个基金项目。现担任Journal of Behavior and Experimental Economics期刊编委和Management Science, Journal of Public Economics, Experimental Economics，Games and Economic Behavior等多个知名期刊的匿名评审。

讲座摘要：Gifts are important instruments to bond interpersonal relationships. Using 36 million online red packets on WeChat, we employ a natural experiment approach to identify in-group contagion of gift giving. We find that, on average, receiving one more dollar causes a recipient to send 18 cents back to the group within the subsequent 24 hours. Moreover, this effect is much stronger for "luckiest draw'' recipients, which suggests a group norm for gift giving. Additionally, we find that gift contagion is affected by in-group friendship network properties, such as the number of in-group friends and the local clustering coefficient

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