讲座题目：Regret and Information Avoidance（后悔与信息规避）

主讲人：王子畅 厦门大学王亚南经济研究院和经济学院 助理教授

讲座时间：2025年03月31日10:00

讲座地点：学院210

讲座内容摘要：

Abstract: Empirical evidence suggests that individuals selectively avoid information depending on past choices. We address these findings by studying an agent whose choice behavior can be modeled as if she trades off two conflicting effects of information. The first is a novel psychological cost from the regret about past choices that are revealed to be suboptimal, whereas the second is the instrumental value of information for making better-informed choices in the future. Our main axioms reflect the agent’s desire to limit her options before the arrival of information and to have more options after the arrival of information. We also posit axioms that connect the agent’s consumption choice with her information choice. We show that all parameters can be uniquely identified from the choice behavior. Comparative statics on the agent’s information aversion attitude is also provided.

信息规避描述了个体决策者拒绝获取免费且有用信息的经济现象。选择性信息规避则描述了相同信息只会在部分决策发生后被决策者规避的特别的信息规避现象。在本文中，我们通过公理化模型刻画了一个新的效用函数——信息取舍效用。在模型中，新的信息会使决策者意识到过去的部分决策并不是最优的，进而产生后悔情绪。决策者对待信息的态度取决于前述后悔成本与信息实用价值的权衡取舍。我们的模型系统性地解释了选择性信息规避行为的一个可能成因，并通过公理刻画了这一类行为的行为经济学基础。信息取舍效用中的全部参数都可以被单独识别。我们还提供了有关信息规避态度强弱的比较静态分析。

主讲人学术简介：

Zichang Wang is currently an assistant professor at WISE and the School of Economics at Xiamen University. Prior to joining Xiamen University, he obtained his PhD from Duke University. His main research interest is on microeconomic theory, with an emphasis on decision theory, behavioral economics and information economics. He has published a paper on Journal of Economic Theory.

王子畅，杜克大学经济学博士，现任厦门大学王亚南经济研究院和经济学院经济学系助理教授。主要研究领域为微观经济理论、决策论、行为经济学与信息经济学。已有论文发表在Journal of Economic Theory等国际权威期刊上。