Consistency in Mixed Demand Systems: Contingent Valuation and Travel Cost Data
提出一种不依赖特定偏好函数形式的一致性检验方法，用于判断旅行成本数据与条件估值法数据在环境质量变化评估中能否结合使用。实证表明陈述偏好数据可合并，但揭示偏好数据不能。
In contrast to previous literature, we propose a consistency test that does not impose any particular common functional form for the preference structure underlying the travel cost (TC) and contingent valuation (CV) models. We derive testable consistency conditions between TC and CV data in the context of mixed demand systems when valuing changes in environmental quality. These conditions are a subset of the rationality conditions. The proposed consistency tests are implemented combining TC and CV data. The empirical results show that it is possible to combine stated TC and CV, but not revealed TC and CV data.