Prudence With Respect To Ambiguity

• 成果类型: Article
• 署名作者: Baillon, Aurelien
• 署名单位: Erasmus University Rotterdam; Erasmus University Rotterdam - Excl Erasmus MC
• 刊物名称: ECONOMIC JOURNAL
• ISSN/ISSBN: 0013-0133
• DOI: 10.1111/ecoj.12358
• 发表日期: 2017
• 页码: 1731-1755
• 关键词: order risk preferences; expected utility; subjective-probability; Uncertainty aversion; attitudes; decisions; MODEL; REPRESENTATION; definition; prevention

摘要

Under expected utility, prudence is equivalent to a positive third derivative of utility and plays a crucial role in precautionary saving behaviour. Eeckhoudt and Schlesinger (2006) proposed behavioural definitions of prudence and of higher order risk preferences. The present article proposes a similar definition for prudence with respect to ambiguity, i.e. situations in which objective probabilities are not available. Implications for several ambiguity models are derived. Ambiguity prudence is implied by Hansen and Sargent's (2001) multiplier preferences, empirically correlates with financial behaviour and plays a key role in prevention behaviour.