保险市场私有信息理论评述

On the Private Information Theory of the Insurance Market

私有信息是保险市场研究中不能回避的命题,在文献回顾的基础上,本文分析了保险市场私有信息研究脉络:古典经济学假设完全信息,因此不可能成为保险私有信息研究的基石;随着信息经济学的兴起,历史文献多认为私有信息损害保险市场效率;近期相关文献在残差信息估计和多维算法的基础上提出被保险人对未来风险同样是未知的,因此被保险方风险偏好、财富状况才是影响保险市场均衡的决定因素。

Private information is a topic unavoidable in research on the insurance market. Based on a review of relevant literature, the paper made an analysis on research about insurance market private information, Classic economics assumes full information, therefore it cannot be the foundation for the study on insurance market private information, Along with the advent of the information economics, historical literature tends to argue that private information undermines insurance market efficiency. Some recent literature holds, on the basis of fragmental information estimates and multidimensional calculation, that the insured is equally ignorant of future risks, therefore his or her risk preference and wealth status are determinants on equilibrium of the insurance market.