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Measuring Part-Whole Bias: Some Evidence from Crop Biotechnology

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  • Marra, Michele C.
  • Piggott, Nicholas E.

Abstract

We analyze the non-pecuniary aspects of some crop biotechnologies taken from three farm-level surveys. We focus particularly on the phenomen on of part-whole bias, which is the empirical finding that the sum of the stated part-worths (the value of each nonpecuniary characteristic) is greater than the stated total value of all the non-pecuniary characteristics. We analyze the empirical evidence of part-whole bias in the surveys, while decomposing it to further understand the phenomenon and to rescale the stated values of the non-pecuniary characteristics in the surveys. We find for all three surveys that the degree to which part-worths should be rescaled is about 60 percent.

Suggested Citation

  • Marra, Michele C. & Piggott, Nicholas E., 2006. "Measuring Part-Whole Bias: Some Evidence from Crop Biotechnology," 2006 Annual Meeting, August 12-18, 2006, Queensland, Australia 25372, International Association of Agricultural Economists.
    • Handle: RePEc:ags:iaae06:25372
    DOI: 10.22004/ag.econ.25372
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    References listed on IDEAS

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    1. Boyle Kevin J. & Desvousges William H. & Johnson F. Reed & Dunford Richard W. & Hudson Sara P., 1994. "An Investigation of Part-Whole Biases in Contingent-Valuation Studies," Journal of Environmental Economics and Management, Elsevier, vol. 27(1), pages 64-83, July.
    2. Alston, Julian M. & Hyde, Jeffrey & Marra, Michele C. & Mitchell, Paul D., 2003. "An Ex Ante Analysis of the Benefits from the Adoption of Corn Rootworm Resistant, Transgenic Corn Technology," 2003 Conference (47th), February 12-14, 2003, Fremantle, Australia 57828, Australian Agricultural and Resource Economics Society.
    3. John P. Hoehn, 1991. "Valuing the Multidimensional Impacts of Environmental Policy: Theory and Methods," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 73(2), pages 289-299.
    4. Diamond, Peter, 1996. "Testing the Internal Consistency of Contingent Valuation Surveys," Journal of Environmental Economics and Management, Elsevier, vol. 30(3), pages 337-347, May.
    5. Bateman, Ian J, et al, 1997. "Does Part-Whole Bias Exist? An Experimental Investigation," Economic Journal, Royal Economic Society, vol. 107(441), pages 322-332, March.
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