Elicitation Format and Sensitivity to Scope |
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Authors: | Vivien Foster Susana Mourato |
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Affiliation: | (1) World Bank, Washington DC, USA;(2) Department of Environmental Science and Technology, Imperial College, London, UK |
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Abstract: | This paper undertakes a systematiccomparison of the contingent valuation (CV) andchoice experiments (CE) methods, andinvestigates the extent to which either of themare affected by insensitivity to scope. This isachieved by undertaking separate CV estimatesof willingness to pay for two nested publicgoods, both of which are explicitly included ina parallel CE survey. The results indicate thatCE values exhibit greater sensitivity to scopethan CV values. CE gives significantly largerresults than CV for the more inclusive publicgood and significantly smaller results for theless inclusive public good. |
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Keywords: | charitable donations choice experiments contingent valuation elicitation format sensitivity to scope willingness to pay |
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