主题：The reciprocal spillover effects of informal risk sharing on formal insurance

主讲人：林森然

时间：2021年06月15日（星期三）中午11:30-13:00

地点：西南财经大学柳林校区弘远楼311室

主讲内容： 

人们有时不愿意购买保险。我们表明，这可能是通过互惠的动机渠道，即个人有将行为上的仁慈（不仁慈）与他人的仁慈（不仁慈）相匹配的倾向。

特别是，一个市场的非正式风险分担可以影响另一个市场的保险购买决定。我们以Dufwenberg & Kirchsteiger (2004)的形式探索这一渠道，并得出可测试的假设。

为了检验我们理论的有效性，我们设计了一个实验，其中两个参与者需要在两个独立的市场中同时做出风险分担的决定。此外，我们允许一个参与者（即被保险人）事先在一个市场上购买正式保险。在这样的实验设计下，测试我们的假设使我们能够明确区分基于意图的互惠性和其他行为渠道，如利他主义和不平等厌恶。

People are sometimes reluctant to purchase insurance. We show that this could be through a reciprocal motivation channel, i.e., individuals have a tendency to match behavioral kindness (unkindness) to kindness (unkindness) from others.

   Especially, informal risk-sharing in one market can influence insurance purchase decision in another market. We explore this channel in the form of Dufwenberg & Kirchsteiger (2004) and derive testable hypotheses.

   To test the validity of our theory, we design an experiment in which two players need to make risk-sharing decisions simultaneously in two independent markets. Moreover, we allow one player (i.e. the insured) to purchase formal insurance in one market beforehand. Under such an experimental design, testing our hypotheses allows us to make a clear-cut distinction between intention-based reciprocity and other behavioral channels, such as altruism and inequality aversion.