Differences between continuous and discrete contingent value estimates.

A split-sample contingent valuation study of willingness to pay (WTP) for food safety improvements was conducted. The results showed that the dichotomous choice (DC) elicitation method consistently produced much larger estimates of WTP than did a continuous method. Little or none of the difference...

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Bibliographic Details
Published in:Land Economics Vol. 72; pp. 397 - 412
Main Authors: Ready, Richard C., Buzby, Jean C., Hu, Dayuan
Format: Article
Published: University of Wisconsin Press August 1996
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Online Access:View this record in EBSCOhost
Description
Summary:A split-sample contingent valuation study of willingness to pay (WTP) for food safety improvements was conducted. The results showed that the dichotomous choice (DC) elicitation method consistently produced much larger estimates of WTP than did a continuous method. Little or none of the difference was due to bias introduced by the statistical techniques used with the DC data, with most or all of the difference being due to variations in respondent behavior. In addition, the continuous WTP responses revealed a significant scope impact, whereas the DC responses did not.