题目：A Field Experiment on Charitable Contribution by Chinese Prison Inmates

报告人：梁平汉

时间：2016年11月30日13:30-15:00

地点：暨南大学中惠楼106B

主办方：暨南大学经济与社会研究院

报告人简介：

梁平汉，中山大学政治与公共事务管理学院教授，博士生导师，西班牙巴塞罗那自治大学经济学博士。研究领域为博弈论、实验经济学、政治经济学、发展经济学等。曾在Games and Economic Behavior, Journal of Comparative Economics, Review of Development Economics, 《经济研究》、《管理世界》、《经济学》（季刊）、《世界经济》等国内外权威核心学术期刊上独立（第一作者）发表论文十余篇。获教育部高等院校青年教师奖，入选“第十一批四川省学术和技术带头人后备人选”，主持国家自然科学基金项目。

摘要：

This paper addresses how the social identity affects the pro-social behavior among inmates. We conduct a field experiment in a typical Chinese jail and introduce a real-effort charitable contribution scheme into the inmates’ ordinary workplace. The amount of charity is tied to the inmates’ output. The main treatment variable is the social identity of the beneficiary. During the five-day experiment, inmates exhibit substantial pro-social behavior: the average output raises 3.2--11%. There is also evidence of in-group favoritism in that the output increases more when the beneficiary is tied to the prisoner identity. However, when the beneficiary is tied to the prisoner identity, the inmates with long incarceration spells have significantly lower output than those with short incarceration spell, indicating that the incarceration weaken the inmates’ in-group favoritism. We suggest that social interactions characterized by the competitive culture, e.g., that among inmates, might mitigate the group identity, and have negative consequences on organizational performance.