本学期经济学系的经济学论坛（十二月）定于12月18日周五中午举办，具体信息如下：
题 目：
Group Identity and Cooperation in Infinitely Repeated Games
报告人：刘潇 博士 清华大学经管学院
时 间：12月18日中午12:30-13:45
地 点：经院302教室
主持人：叶静怡 教授
点评人：董志勇 教授
胡 涛 副教授
Abstract: We design a laboratory experiment to study the impact of group identity on individual cooperation in infinitely repeated prisoner’s dilemma games, and how this impact interacts with the discount factor in the games. We find that under both the low and high discount factors, participants are more likely to cooperate when they are paired with an ingroup member, compared to when they are paired with an outgroup member or when there are no groups. However, the high cooperation level with an ingroup member decreases over time with the low discount factor, while it sustains over time with the high discount factor. We also find that when being paired with an ingroup member participants are less likely to adopt always-defect as their repeated game strategy. This effect is stronger in the games with the high discount factor.
简历见：
/upfile/file/20151215143014_809239_87233.pdf
