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Measuring Consumer Willingness to Pay at the Point of Purchase

出版	SSRN, 2014
URL	http://books.google.com.hk/books?id=pCHizwEACAAJ&hl=&source=gbs_api

註釋Economists, psychologists, and marketing researchers rely on measures of consumers' willingness to pay (WTP) in estimating demand for private and public goods and in designing optimal price schedules. Existing market research techniques for measuring WTP differ in whether they provide an incentive to consumers to reveal their true WTP and in whether they simulate actual point-of-purchase contexts. Common elicitation approaches are conjoint analysis and contingent valuation-based techniques that directly ask consumers about their WTP as well as simulated test markets. Second-price sealed-bid (Vickrey) auctions have also been proposed in the literature. We present an empirical comparison of several procedures for eliciting WTP that are applicable directly at the point of purchase. In particular, we test the applicability of Becker, DeGroot, and Marschak's (BDM, 1964) well-known incentive-compatible procedure for measuring the utility of lotteries to measuring consumer WTP. In three studies, we explore the reliability, validity, and feasibility of the procedure and show that it yields lower WTP estimates than non-incentive-compatible methods such as open-ended and double-bounded contingent valuation. Studies 1 and 2 are field studies of inexpensive grocery items that examine the performance of these methods under quasi-monopoly conditions in realistic everyday purchase situations. Study 3 applies the methods to an inexpensive durable and shows experimentally that differences in WTP estimates arise from the incentive constraint itself rather than the cognitive effort required in responding. This experiment also controls for strategic response behavior.