Willingness to Pay for Quality Improvements: Comparative Statics and Interpretation of Contingent Valuation Results
研究了价格、质量和收入变化对质量改进支付意愿的影响，为条件估值法的实证模型提供解释，并可用于比较条件估值与休闲需求模型的有效性。
This paper extends variation function theory by examining the effects of changes in prices, quality, and income on willingness to pay for quality change. Comparative static effects are found for both on-site users and nonusers of the resource. These results are used to interpret contingent valuation empirical models. For example, the substitution and complementary relationships between trips to natural resource sites can be identified. This paper also suggests tests for comparison of contingent valuation with recreation demand models and other tests of validity.