Revealed Preferences in a Heterogeneous Population
研究了在异质性群体中，重复截面数据下弱公理（WARP）的经验内容，发现违反WARP的消费者比例无法点识别但可被界定，并提供了估计量和置信区间。
This paper explores the empirical content of the weak axiom of revealed preference (WARP) for repeated cross-sections. In a heterogeneous population, the fraction of consumers who violate WARP is not point identified but can be bounded. These bounds, as well as some nonparametric refinements, correspond to intuitive behavioral assumptions if there are two goods. With three or more goods, such intuitions break down, and plausible assumptions can have counterintuitive implications. We also provide estimators and confidence regions. The empirical application reveals that in the British Family Expenditure Survey, upper bounds are frequently positive but lower bounds are not significantly so. © 2014 The President and Fellows of Harvard College and the Massachusetts Institute of Technology