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Comparing Open-Ended Choice Experiments and Experimental Auctions: An Application to Golden Rice

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  • Jay R. Corrigan
  • Dinah Pura T. Depositario
  • Rodolfo M. Nayga, Jr.
  • Ximing Wu
  • Tiffany P. Laude

Abstract

We use two different experimental valuation methods to estimate consumer demand for genetically-modified golden rice. The first is an open-ended choice experiment (OECE) where participants name the quantities of golden rice and conventional rice demanded at each of several price combinations, one of which will be randomly chosen as binding. This allows us to estimate market demand by aggregating demand across participants. This estimate of market demand also allows us to estimate own-price elasticity and consumer surplus for golden rice. Comparing willingness-to-pay (WTP) estimates from the OECE with those from a uniform-price auction, we find that OECE WTP estimates exhibit less affiliation across rounds, and the effects of positive and negative information under the OECE are more consistent with prior expectations and existing studies. We also find that while auction WTP estimates more than double across five rounds, OECE WTP estimates are stable across rounds and are always roughly equal to those from the final auction round.

Suggested Citation

  • Jay R. Corrigan & Dinah Pura T. Depositario & Rodolfo M. Nayga, Jr. & Ximing Wu & Tiffany P. Laude, 2009. "Comparing Open-Ended Choice Experiments and Experimental Auctions: An Application to Golden Rice," Working Papers 0901, Kenyon College, Department of Economics.
  • Handle: RePEc:ken:wpaper:0901
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    References listed on IDEAS

    as
    1. Frode Alfnes, 2007. "Willingness to Pay versus Expected Consumption Value in Vickrey Auctions for New Experience Goods," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 89(4), pages 921-931.
    2. Anderson, Kym & Jackson, Lee Ann, 2005. "Genetically Modified Rice Adoption: Implications for Welfare and Poverty Alleviation," Journal of Economic Integration, Center for Economic Integration, Sejong University, vol. 20, pages 771-788.
    3. Alfnes, Frode & Guttormsen, Atle G. & Steine, Gro & Kolstad, Kari, 2005. "Consumers' Willingness To Pay For The Color Of Salmon:A Choice Experiment With Real Economic Incentives," 2005 Annual meeting, July 24-27, Providence, RI 19126, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    4. Gro Steine & Kari Kolstad, 2006. "Consumers' Willingness to Pay for the Color of Salmon: A Choice Experiment with Real Economic Incentives," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 88(4), pages 1050-1061.
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    Keywords

    choice experiments; experimental auctions; golden rice; valuation;

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