Risk Aversion and Insurance Propensity

• 成果类型: Article
• 署名作者: Maccheroni, Fabio; Marinacci, Massimo; Wang, Ruodu; Wu, Qinyu
• 署名单位: Bocconi University; University of Waterloo
• 刊物名称: AMERICAN ECONOMIC REVIEW
• ISSN/ISSBN: 0002-8282
• DOI: 10.1257/aer.20231529
• 发表日期: 2025
• 页码: 1597-1649
• 关键词: EXPECTED-UTILITY; prospect-theory; REPRESENTATION; probability; uncertainty; dependence; definition; DECISION

摘要

We provide a new foundation of risk aversion by showing that this attitude is fully captured by the propensity to seize insurance opportunities. In our main results, we first characterize Arrow-Pratt (1963-1964) risk aversion in terms of propensity to full insurance and the stronger notion of risk aversion of Rothschild and Stiglitz (1970) in terms of propensity to partial insurance. We then extend the analysis to comparative risk aversion by showing that the classical notion of Yaari (1969) corresponds to comparative propensity to full insurance, while the stronger notion of Ross (1981) corresponds to comparative propensity to partial insurance. (JEL D81, G22, G52)