Valuing Environmental Resources through Demand for Related Commodities
提出一种基于显示偏好理论的实证策略，通过观察相关商品消费来推导公共物品（如环境质量）变化的使用和非使用价值，并以水质评估案例检验了弱互补性和Willig条件的适用性。
We examine the revealed preference theory underlying the welfare analysis of public goods (e.g., environmental quality) by observing the consumption of related commodities. Inspired by Larson (1991) and Ebert (1998), and extended from Eom and Larson (2006), an empirical strategy is formulated, consistent with the theory of uniquely deriving use and nonuse values for a change in the public good. We show that the weak complementarity assumption and the Willig condition, the common preference assumptions used to support the revealed preference methods for non‐market valuation, may be tested as parameter restrictions. A study of water quality valuation is presented to illustrate the proposed empirical strategy. Results show that the weak complementarity assumption and the Willig condition generally do not hold in the case study, and the consumer surplus derived from the indirect valuation method deviates largely from the exact welfare measures.