Marginal WTP and Distance Decay: The Role of ‘Protest’ and ‘True Zero’ Responses in the Economic Valuation of Recreational Water Quality

Magnus Söderberg and David Barton ()

Environmental & Resource Economics, 2014, vol. 59, issue 3, 389-405

Abstract: We evaluate the sensitivity of distance decay in individuals’ stated willingness to pay (WTP) for water quality improvements in eutrophied lakes. We extend the standard model of contingent valuation (CV) by allowing individuals to adopt a sequential evaluation process consisting of two decision stages. In the first stage respondents decide whether they are ‘protesters’, have a WTP $$=$$ = ‘true zero’ or a $$\hbox {WTP}>0$$ WTP > 0 . Conditioned on a strictly positive WTP, we use Lee’s selectivity-corrected model to determine the magnitude of their WTP in the second stage. Using CV survey data from Norway we find significant distance decay in the first stage classification of respondents as ‘protesters’, ‘true zero’ WTP, or positive WTP. In the second stage model for positive WTP responses, we find little or no significant relationships when correcting for selection. Results suggest that previous findings of significant distance decay in contingent valuation of lake and river water in Europe may be driven by the definition of ‘protest’ and ‘true zero’ respondents. We find that WTP for water quality may be more useful as a qualitative indicator of political support for user financed water quality measures, than as a cardinal measure of marginal utility of water quality improvements. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Non-market valuation; Stated preference; ‘Protest’ ‘true zero’ responses; Methodology; Water quality; Disproportionate cost; EU Water Framework Directive; Q51; Q15; Q26; Q24; Q28 (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (10)

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Working Paper: Marginal WTP and Distance Decay: The Role of ‘Protest’ and ‘True Zero’ Responses in the Economic Valuation of Recreational Water Quality (2014)
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DOI: 10.1007/s10640-013-9735-y

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