PT  - JOURNAL ARTICLE
AU  - Ready, Richard C.
AU  - Navrud, Ståle
AU  - Dubourg, W. Richard
TI  - How Do Respondents with Uncertain Willingness to Pay Answer Contingent Valuation Questions?
AID  - 10.2307/3147126
DP  - 2001 Aug 01
TA  - Land Economics
PG  - 315--326
VI  - 77
IP  - 3
4099  - http://le.uwpress.org/content/77/3/315.short
4100  - http://le.uwpress.org/content/77/3/315.full
SO  - Land Econ2001 Aug 01; 77
AB  - Four elicitation methods are compared in a split-sample, contingent-valuation study valuing avoidance of episodes of ill health linked to air pollution: two discrete methods and two more-continuous methods. Respondents to a traditional payment card (PC) question gave willingness-to-pay values that were lower than those implied by dichotomous-choice (DC) responses. However, follow up questions showed that DC respondents were less certain of their stated behavior than were PC respondents. When respondents were told to be “almost certain” of their responses, responses to the DC and the PC formats converged. (JEL Q21)