A comparison of stated preference methods for estimating monetary values
比较了二分选择条件价值评估和选择实验两种方法估算的支付意愿，发现两者福利估计无显著差异，但提出了关于支付意愿估计方法有效性的重要研究问题。
This paper presents a comparison of willingness to pay (WTP) estimates generated from a dichotomous choice (DC) contingent valuation experiment and a choice experiment (CE). The study was conducted with subjects undergoing assisted reproductive techniques in the Grampian area of Scotland. Subjects first completed a DC WTP questionnaire. They were sent a CE questionnaire two months later. Welfare estimates for the DC WTP study and CE were not significantly different. Important research questions are raised concerning the validity of the various approaches to estimating WTP.