Do protest responses to a contingent valuation question and a choice experiment differ
2008
Meyerhoff, Jürgen | Liebe, Ulf
It is suggested that the number of protest responses in stated preference surveys depends, inter alia, on the valuation method used. Choice Experiments (CE) are said to generate a lower number of protest responses than Contingent Valuation (CV). However, no comparison of both methods with respect to protest responses has been conducted to date. We used both CE and CV in a survey on forest biodiversity in two German regions. Protest beliefs were measured for all respondents irrespective of whether they were willing to pay or not. The results show no clear pattern of differences between CE and CV regarding protest beliefs and protest responses. Using an attitude scale based on respondents' protest beliefs, we see a significant negative effect of this attitude on willingness to pay in both methods. However, in one of the two study regions, the effect is weaker in CE than in CV.
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