STOCHASTIC CHOICE AND REVEALED PERTURBED UTILITY

• 成果类型: Article
• 署名作者: Fudenberg, Drew; Iijima, Ryota; Strzalecki, Tomasz
• 署名单位: Harvard University
• 刊物名称: ECONOMETRICA
• ISSN/ISSBN: 0012-9682
• DOI: 10.3982/ECTA12660
• 发表日期: 2015
• 页码: 2371-2409
• 关键词: expected utility; Representation theorem; probabilistic choice; revealed preference; CONVERGENCE; equilibria; games

摘要

Perturbed utility functions-the sum of expected utility and a nonlinear perturbation function-provide a simple and tractable way to model various sorts of stochastic choice. We provide two easily understood conditions each of which characterizes this representation: One condition generalizes the acyclicity condition used in revealed preference theory, and the other generalizes Luce's IIA condition. We relate the discrimination or selectivity of choice rules to properties of their associated perturbations, both across different agents and across decision problems. We also show that these representations correspond to a form of ambiguity-averse preferences for an agent who is uncertain about her true utility.