Dealing with ignored attributes in choice experiments on valuation of Sweden’s environmental quality objectives

Fredrik Carlsson, Mitesh Kataria () and Elina Lampi

No 289, Working Papers in Economics from University of Gothenburg, Department of Economics

Abstract: In this paper we use follow-up questions to investigate whether attributes have been ignored in a choice experiment on environmental goods. This information is subsequently used in the estimation of the model by restricting the individual parameters for the ignored attributes to zero. We then separately estimate the marginal willingness to pay (WTP) for the whole sample and for those who took all attributes into account. We find no significant differences in mean marginal WTP between these two models. However, when taking the shares of respondents who considered both the environmental and the cost attributes (52 -69 percent of the respondents) into account, then the marginal WTPs for each attribute change if the respondents who ignored the attributes have a zero WTP. Hence, not taking into account whether respondents have considered the attribute could give biased welfare estimates and wrong policy implications. We also investigate whether any socioeconomic characteristics can explain who ignores attributes, and find that very few of the variables are significant, indicating that we can only partly explain the behavior.

Keywords: Choice experiment; WTP; ignoring attributes; follow-up question; environmental quality objectives (search for similar items in EconPapers)
JEL-codes: D61 Q50 Q51 (search for similar items in EconPapers)
Pages: 35 pages
Date: 2008-02-20, Revised 2009-03-01
New Economics Papers: this item is included in nep-cbe and nep-dcm
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Published in Environmental and Resource Economics, 2010, pages 65-89.

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Related works:
Journal Article: Dealing with Ignored Attributes in Choice Experiments on Valuation of Sweden’s Environmental Quality Objectives (2010)
Working Paper: Dealing with ignored attributes in choice experiments on valuation of Sweden's environmental quality objectives (2009)
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