What’s it worth? Exploring value uncertainty using interval questions in Contingent Valuation
In this paper we explore the idea that people only know the value they place on a given environmental change as a range, rather than as a singleton. We use the payment ladder design of contingent valuation, and take as a case study the value of coastal water quality improvements in Scotland. Kaplan-Meier survival curves, Tobit analysis and a modified Turnbull algorithm are used to explore the data. We find that most people state their values as a range, and investigate empirically the determinants of this range. The paper concludes with some thoughts concerning possible links between value ranges, context-dependence and uncertainty.
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- Nick Hanley & David Bell & Begona Alvarez-Farizo, 2003. "Valuing the Benefits of Coastal Water Quality Improvements Using Contingent and Real Behaviour," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 24(3), pages 273-285, March.
- Nick Hanley & Begona Alvarez-Farizo, "undated". "Valuing the Benefits of Coastal Water Quality Improvements using Contingent and Real Behaviour," Working Papers 2002_9, Business School - Economics, University of Glasgow, revised Sep 2002.
- S Georgiou & I H Langford & I J Bateman & R K Turner, 1998. "Determinants of Individuals' Willingness to Pay for Perceived Reductions in Environmental Health Risks: A Case Study of Bathing Water Quality," Environment and Planning A, , vol. 30(4), pages 577-594, April.
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- Ready Richard C. & Whitehead John C. & Blomquist Glenn C., 1995. "Contingent Valuation When Respondents Are Ambivalent," Journal of Environmental Economics and Management, Elsevier, vol. 29(2), pages 181-196, September.
- Richard C. Ready & Ståle Navrud & RW. Richard Dubourg, 2001. "How Do Respondents with Uncertain Willingness to Pay Answer Contingent Valuation Questions?," Land Economics, University of Wisconsin Press, vol. 77(3), pages 315-326.
- Robin Gregory & James Flynn & Stephen M. Johnson & Theresa A. Satterfield & Paul Slovic & Robert Wagner, 1997. "Decision-Pathway Surveys: A Tool for Resource Managers," Land Economics, University of Wisconsin Press, vol. 73(2), pages 240-254.
- Dubourg, W R & Jones-Lee, M W & Loomes, Graham, 1997. "Imprecise Preferences and Survey Design in Contingent Valuation," Economica, London School of Economics and Political Science, vol. 64(256), pages 681-702, November.
- Li Chuan-Zhong & Mattsson Leif, 1995. "Discrete Choice under Preference Uncertainty: An Improved Structural Model for Contingent Valuation," Journal of Environmental Economics and Management, Elsevier, vol. 28(2), pages 256-269, March.
- Champ, Patricia A. & Bishop, Richard C. & Brown, Thomas C. & McCollum, Daniel W., 1997. "Using Donation Mechanisms to Value Nonuse Benefits from Public Goods," Journal of Environmental Economics and Management, Elsevier, vol. 33(2), pages 151-162, June. Full references (including those not matched with items on IDEAS)
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