Preferences for partial information and ambiguity

• 成果类型: Article
• 署名作者: Li, Jian
• 署名单位: Iowa State University
• 刊物名称: THEORETICAL ECONOMICS
• ISSN/ISSBN: 1933-6837
• DOI: 10.3982/TE2851
• 发表日期: 2020-07-01
• 页码: 1059-1094
• 关键词: Information avoidance; ambiguity aversion; recursive preferences; D81; D83; D90

摘要

We commonly think of information as an instrument for better decisions, yet evidence suggests that people often decline free information in nonstrategic scenarios. This paper provides a theory for how a dynamically-consistent decision maker can be averse to partial information as a consequence of ambiguity aversion. It introduces a class of recursive preferences on an extended choice domain, which allows the preferences to depend on how information is dynamically revealed and to depart from the standard expected-utility theory. A new notion of ambiguity aversion, called Event Complementarity, exactly characterizes aversion to partial information. Familiar static ambiguity-averse preferences are embedded into the general recursive model, in which conditions for partial information aversion are identified. The findings suggest that Event Complementarity overlaps with yet still differs from the conventional notion of ambiguity aversion.