Heterogeneity in health insurance choice: An experimental investigation of consumer choice and feature preferences
通过实验室实验研究人们在健康保险选择中的异质性，发现不同个体对保费、免赔额等属性的支付意愿差异很大，且部分人的选择不符合标准模型，可能存在决策错误或依赖经验法则。
Abstract We investigate heterogeneity in health insurance choice using data from a controlled laboratory experiment. Participants make consecutive choices from sets of insurance plans that vary in premium, deductible, and complementary coverage of illnesses. We find that there is considerable heterogeneity in how much individuals are willing to pay for certain plan attributes. To better understand these differences, we account for individual risk preferences using a rank‐dependent expected utility (RDEU) model and assess the welfare effects of plan choices. At the aggregate level, we find welfare losses under both the normative RDEU model and the descriptive EV model. At the individual level, however, the results are more differentiated: for some individuals, choices are consistent with their RDEU preferences, whereas for others, choices do not fit either model, suggesting either decision errors or reliance on heuristics.