Improving Willingness to Pay Estimates for Quality Improvements through Joint Estimation with Quality Perceptions
AbstractWillingness to pay for quality change may depend on heterogeneous perceived quality levels. In these instances, contingent valuation studies should include measures of quality perceptions as covariates in the willingness to pay model in order to avoid omitted variable bias. Variation in quality perceptions across respondents leads to a potential endogeneity of quality perceptions. We address the potential for endogeneity bias using an instrumental variables approach in which a measure of quality perceptions is included as a determinant of willingness to pay and is simultaneously determined by various exogenous factors. The willingness to pay model is estimated jointly with quality perceptions allowing for correlation of the error terms. Using data on willingness to pay for water quality improvements in the Neuse River in North Carolina we reject exogeneity of perceived quality. Correcting for endogeneity improves the measurement of willingness to pay by differentiating willingness to pay among respondents with heterogeneous quality perceptions.
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Bibliographic InfoPaper provided by Department of Economics, Appalachian State University in its series Working Papers with number 05-09.
Date of creation: 2005
Date of revision:
Publication status: Forthcoming in Southern Economic Journal
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Postal: Thelma C. Raley Hall, Boone, North Carolina 28608
Web page: http://www.business.appstate.edu/departments/economics/
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Other versions of this item:
- John C. Whitehead, 2006. "Improving Willingness to Pay Estimates for Quality Improvements through Joint Estimation with Quality Perceptions," Southern Economic Journal, Southern Economic Association, vol. 73(1), pages 100â111, July.
- John C. Whitehead, 2005. "Improving Willingness to Pay Estimates for Quality Improvements Throught Joint Estimation with Quality Perceptions," NCEE Working Paper Series 200508, National Center for Environmental Economics, U.S. Environmental Protection Agency, revised Aug 2005.
- Q51 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Valuation of Environmental Effects
This paper has been announced in the following NEP Reports:
- NEP-ALL-2005-06-05 (All new papers)
- NEP-ECM-2005-06-05 (Econometrics)
- NEP-ENV-2005-06-05 (Environmental Economics)
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