Are Consumers in Developing Countries Willing-to-Pay More for Micronutrient-Dense Biofortified Foods? Evidence from a Field Experiment in Uganda
Vitamin A deficiency is a major health problem in Africa and in many other developing countries. Biofortified staple crops that are high in pro vitamins A and adapted to local growing environment have the potential to reduce the prevalence of vitamin A deficiency. One such example is the orange-fleshed sweetpotato. However because of its distinctive orange color, which is in contrast to the white varieties that are typically consumed in Africa, it is important to assess whether consumers will accept it. It is this question that this paper attempts to address, using a choice experiment with the real product to quantify the magnitude of the premium or discount in consumers’ willingness to pay that may be associated with it. In addition, it also considers the extent to which the provision of nutrition information affects valuations. Finally, it addresses whether the use of hypothetical scenarios, both with and without a cheap talk script is justified in a developing country context, and quantifies the magnitude of hypothetical bias that results as a consequence. The experiment was conducted in Uganda, which is a key target country for the dissemination of orange-fleshed sweetpotato. Our results suggest that in the absence of nutrition information, there is no difference in the willingness to pay between white and orange varieties, but there is a discount for yellow sweetpotato (which does not have any beta-carotene). The provision of nutrition information does translate into substantial premia for the orange varieties, indicating that an information campaign may be key to drive market acceptance of the new product. Finally, there is a substantial hypothetical bias in both the WTP and the marginal WTP for the new varieties, and while cheap talk mitigates this bias, it does not eliminate it.
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- McGuirk, Anya M. & Driscoll, Paul J. & Alwang, Jeffrey Roger & Huang, Huilin, 1995. "System Misspecification Testing And Structural Change In The Demand For Meats," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 20(01), July.
- John D. Jackson, 1997. "Effects of Health Information and Generic Advertising on U.S. Meat Demand," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 79(1), pages 13-23.
- Train,Kenneth E., 2009.
"Discrete Choice Methods with Simulation,"
Cambridge University Press, number 9780521766555.
- Train,Kenneth E., 2009. "Discrete Choice Methods with Simulation," Cambridge Books, Cambridge University Press, number 9780521747387, February.
- Kenneth Train, 2003. "Discrete Choice Methods with Simulation," Online economics textbooks, SUNY-Oswego, Department of Economics, number emetr2.
- Li Quan & McCluskey Jill J & Wahl Thomas I., 2004. "Effects of Information on Consumers' Willingness to Pay for GM-Corn-Fed Beef," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 2(2), pages 1-18, May.
- Hensher, David & Louviere, Jordan & Swait, Joffre, 1998. "Combining sources of preference data," Journal of Econometrics, Elsevier, vol. 89(1-2), pages 197-221, November.
- Laura O. Taylor & Ronald G. Cummings, 1999. "Unbiased Value Estimates for Environmental Goods: A Cheap Talk Design for the Contingent Valuation Method," American Economic Review, American Economic Association, vol. 89(3), pages 649-665, June.
- Pollak, Robert A & Wales, Terence J, 1981. "Demographic Variables in Demand Analysis," Econometrica, Econometric Society, vol. 49(6), pages 1533-1551, November.
- Arne Risa Hole, 2007. "Fitting mixed logit models by using maximum simulated likelihood," Stata Journal, StataCorp LP, vol. 7(3), pages 388-401, September.
- Carlsson, Fredrik & Frykblom, Peter & Johan Lagerkvist, Carl, 2005. "Using cheap talk as a test of validity in choice experiments," Economics Letters, Elsevier, vol. 89(2), pages 147-152, November.
- Carlsson, Fredrik & Frykblom, Peter & Lagerkvist, Carl-Johan, 2004. "Using Cheap-Talk as a Test of Validity in Choice Experiments," Working Papers in Economics 128, University of Gothenburg, Department of Economics.
- Frykblom, Peter, 1997. "Hypothetical Question Modes and Real Willingness to Pay," Journal of Environmental Economics and Management, Elsevier, vol. 34(3), pages 275-287, November.
- Gary Chamberlain, 1980. "Analysis of Covariance with Qualitative Data," Review of Economic Studies, Oxford University Press, vol. 47(1), pages 225-238.
- Jayson L. Lusk & Ted C. Schroeder, 2004. "Are Choice Experiments Incentive Compatible? A Test with Quality Differentiated Beef Steaks," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 86(2), pages 467-482.
- Jayson Lusk & Ted Schroeder, 2004. "Are choice experiments incentive compatible? A test with quality differentiated beef steaks," Artefactual Field Experiments 00096, The Field Experiments Website.
- John A. List, 2001. "Do Explicit Warnings Eliminate the Hypothetical Bias in Elicitation Procedures? Evidence from Field Auctions for Sportscards," American Economic Review, American Economic Association, vol. 91(5), pages 1498-1507, December.
- John List, 2001. "Do explicit warnings eliminate the hypothetical bias in elicitation procedures? Evidence from field auctions for sportscards," Framed Field Experiments 00163, The Field Experiments Website.
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