Scope insensitivity in health risk reduction studies: A comparison of choice experiments and the contingent valuation method for valuing safer food |
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| Authors: | Isabell Goldberg Jutta Roosen |
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| Institution: | (1) Department of Food Economics and Consumption Studies, University of Kiel, Olshausenstrasse 40, D–24098 Kiel, Germany |
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| Abstract: | Scope insensitivity and embedding are fundamental concerns in contingent valuation studies for health risk reductions. Recently,
choice experiments have increasingly been used to obtain contingent willingness to pay (WTP) estimates. We juxtapose the WTP
estimates of a choice experiment (CE) to those of the contingent valuation method (CVM) for different health risk reductions
and compare them in the extent of scope insensitivity and embedding. WTP using CVM is scope sensitive for single health risks,
but embedding is observed for multiple disease risks. In contrast, WTP based on the CE is highly scope sensitive and convex
in risk reduction levels.
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| Keywords: | Choice experiments Contingent valuation method Embedding effect Food safety Scope insensitivity Willingness to pay |
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