社会认同、偏好和经济行为——基于行为和实验经济学研究成果的讨论

社会认同理论的引入为实验经济学相关研究开拓了一个新的分支。通过假设个体间相互关联，社会认同因素直接作用于个体的偏好，进而改变经济决策，是对传统经济学理论的突破。总体来说，社会认同对偏好的塑造体现在两个方面：首先，社会认同会提升个体对内群的社会偏好，导致内群偏见，并使个体做出更加有利于内群的行为；其次，社会认同会改变个体对内群规则的偏好，进而导致不同维度的群体分类在经济决策上的差异。

Scocial ldentily,Breterence and Economic Behavior: Based on the Reviews of the Research Findigs of Behavior and Experimedtal Economics

The introduction of social identity theory has opened up a new branch for the study of experimental economics. By assuming that individuals are related to each other, the social identify have directly effects on the individual's preferences, and have changed the economic decision-making, which is a breakthrough of the traditional economic theory. Overall, the social identity to shape preferences embodied in two aspects: first, the social identity will enhance social preferences within the group, and lead in-group bias, thus the individual behavior will be beneficial to the group; secondly, social identity will change individual preferencs for group rules, leading to differences in the economic decisions of various types of groups This paper reviews the experimental economics research on how individual preferences are formed by social identity, and summarizes the specific research methods, and finally prospects the future development.