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Stability of willingness-to-pay for coastal management : a choice experiment across three time periods.

Phillips, Y. and Scarpa, R. and Marsh, D. (2017) 'Stability of willingness-to-pay for coastal management : a choice experiment across three time periods.', Ecological economics., 138 . pp. 64-73.

Abstract

A key assumption of stated preference methods is that individuals have well-formed preferences that are robust over time. Both the discovered and constructed preference perspectives imply this is not necessarily the case. There can be a large situational component to expressed preferences that add to the uncertainty of sampling error. Most non-market valuation studies only collect data from one point in time so the degree of temporal variability cannot be tested. Test-retest studies that provide data from two points in time generally find significant differences in preference structure and willingness-to-pay (WTP). In this study we test stability of WTP for beach erosion management using a fully ranked discrete choice experiment survey with not one but two retests over a six month period. We find that stability does not improve with the additional repetition as the preference discovery hypothesis implies it might. WTP confidence intervals overlap but the models are significantly different at each point in time, even after allowing for variation in choice error. Either the survey did not facilitate sufficient preference discovery or preferences were reconstructed. However, respondents with high scores of self-reported certainty in their choices in the first survey had significantly more stable WTP estimates.

Item Type:Article
Full text:Publisher-imposed embargo until 29 March 2018.
(AM) Accepted Manuscript
First Live Deposit - 23 March 2017
Available under License - Creative Commons Attribution Non-commercial No Derivatives.
File format - PDF
(1191Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1016/j.ecolecon.2017.03.031
Publisher statement:© 2017 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Record Created:23 Mar 2017 10:13
Last Modified:06 Apr 2017 15:00

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