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Credence Goods, Consumer Misinformation, and Quality

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  • Soham Baksi

    ()

  • Pinaki Bose
  • Di Xiang

Abstract

For certain products, consumers' misinformation about quality is more endemic at intermediate levels of the quality spectrum rather than at the top or the bottom levels of quality. Using an oligopoly model of vertical product differentiation with three quality levels - green, natural, and brown - we examine the consequences of consumers' overestimation of the quality of the natural (i.e. intermediate quality) product. There are three firms in the market, with each type of firm producing the corresponding type of the product. The firms choose the quality level of their product before choosing its price (Bertrand case) or quantity (Cournot case). Irrespective of the nature of second stage competition, we find that quality overestimation by consumers increases profit of the natural firm, and motivates it to raise its product’s quality. In response, the green firm improves its quality even further, but ends up with lower profit. Overall, average quality of the vertically differentiated product improves, which raises consumer surplus. Social welfare increases when firms compete in prices but falls when they compete in quantities.

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File URL: http://economics.uwinnipeg.ca/RePEc/winwop/2012-01.pdf
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Bibliographic Info

Paper provided by The University of Winnipeg, Department of Economics in its series Departmental Working Papers with number 2012-01.

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Length: 23 pages
Date of creation: Jun 2012
Date of revision:
Handle: RePEc:win:winwop:2012-01

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  1. Crampes, Claude & Hollander, Abraham, 1995. "Duopoly and quality standards," European Economic Review, Elsevier, vol. 39(1), pages 71-82, January.
  2. Valletti, Tommaso M, 2000. "Minimum Quality Standards under Cournot Competition," Journal of Regulatory Economics, Springer, vol. 18(3), pages 235-45, November.
  3. Edward L. Glaeser & Gergely Ujhelyi, 2006. "Regulating Misinformation," NBER Working Papers 12784, National Bureau of Economic Research, Inc.
  4. Goss, Jody & Holcomb, Rodney B. & Ward, Clement E., 2002. "Factors Influencing Consumer Decisions Related To "Natural" Beef In The Southern Plains," Journal of Food Distribution Research, Food Distribution Research Society, vol. 33(01), March.
  5. Scarpa, Carlo, 1998. "Minimum quality standards with more than two firms1," International Journal of Industrial Organization, Elsevier, vol. 16(5), pages 665-676, September.
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