题　目：Modeling and Joint Estimation of Two Order-Restricted Contingent Valuation Scenarios 主讲人：江振东教授(政治大学统计系) 时　间：96年11月2日(星期五)上午10:40-11:30 (上午10:20-10:40茶会於交大统计所428室举行) 地　点：交大综合一馆427室 Abstract Nowadays more and more double-bounded dichotomous choice contingent valuation surveys ask subjects to respond to more than one WTP (willingness-to-pay) scenarios. Under such a circumstance, responses provided by a subject are clearly correlated, and the prices themselves might be inherently ordered as well. The former, despite being well recognized in the literature, is often ignored by practitioners. The latter, on the other hand, receives little attention. These are the two issues that need to be addressed. Additional issue that is worthy of attention is about the protest samples. In this study, we propose a model based on a new family of bivariate distributions to handle the three issues simultaneously. The model is also applied to elicit WTP for two weight-loss programs. --

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