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Experts vs. discounters: Consumer free-riding and experts withholding advice in markets for credence goods

  • Dulleck, Uwe
  • Kerschbamer, Rudolf

This paper studies the incentives for credence goods experts to invest effort in diagnosis if effort is both costly and unobservable, and if they face competition by discounters who are not able to perform a diagnosis. The unobservability of diagnosis effort and the credence characteristic of the good induce experts to choose incentive compatible tariff structures. This makes them vulnerable to competition by discounters. We explore the conditions under which honestly diagnosing experts survive competition by discounters; we identify situations in which experts misdiagnose consumers in order to prevent them from free-riding on experts' advice; and we discuss policy options to solve the free-riding consumers-cheating experts problem.

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Article provided by Elsevier in its journal International Journal of Industrial Organization.

Volume (Year): 27 (2009)
Issue (Month): 1 (January)
Pages: 15-23

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Handle: RePEc:eee:indorg:v:27:y:2009:i:1:p:15-23
Contact details of provider: Web page: http://www.elsevier.com/locate/inca/505551

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  1. Ingela Alger & Francois Salanie, 2001. "A Theory of Fraud and Over-Consumption in Experts Markets," Boston College Working Papers in Economics 495, Boston College Department of Economics, revised 09 Nov 2004.
  2. Emons, Winand, 1998. "Product Differentiation and Price Competition Between a Safe and a Risky Seller," CEPR Discussion Papers 2041, C.E.P.R. Discussion Papers.
  3. Bouckaert, Jan & Degryse, Hans, 2000. "Price competition between an expert and a non-expert," International Journal of Industrial Organization, Elsevier, vol. 18(6), pages 901-923, August.
  4. Kala Krishna & Tor Winston, 2000. "If at First You Don't Succeed...: Profits, Prices and Market Structure in a Model of Quality with Unknowable Consumer Heterogeneity," NBER Working Papers 7494, National Bureau of Economic Research, Inc.
  5. Howard P. Marvel & Stephen McCafferty, 1984. "Resale Price Maintenance and Quality Certification," RAND Journal of Economics, The RAND Corporation, vol. 15(3), pages 346-359, Autumn.
  6. Taylor, Curtis R, 1995. "The Economics of Breakdowns, Checkups, and Cures," Journal of Political Economy, University of Chicago Press, vol. 103(1), pages 53-74, February.
  7. Dulleck, Uwe & Kerschbamer, Rudolf, 2005. "Experts vs Discounters: Competition and Market Unravelling When Consumers Do Not Know What they Need," CEPR Discussion Papers 5242, C.E.P.R. Discussion Papers.
  8. W. Pesendorfer & A. Wolinsky, 2000. "Second Opinions and Price Competition: Inefficiency in the Market for Expert Advice," Princeton Economic Theory Papers 00s18, Economics Department, Princeton University.
  9. Klein, Benjamin & Murphy, Kevin M, 1988. "Vertical Restraints as Contract Enforcement Mechanisms," Journal of Law and Economics, University of Chicago Press, vol. 31(2), pages 265-97, October.
  10. Emons, Winand, 2001. "Credence goods monopolists," International Journal of Industrial Organization, Elsevier, vol. 19(3-4), pages 375-389, March.
  11. Kai Sülzle & Achim Wambach, 2005. "Insurance in a Market for Credence Goods," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 72(1), pages 159-176.
  12. Uwe Dulleck, 2000. "Where Are The Problems with Credence Goods?," Econometric Society World Congress 2000 Contributed Papers 1441, Econometric Society.
  13. Pitchik, Carolyn & Schotter, Andrew, 1987. "Honesty in a Model of Strategic Information Transmission," American Economic Review, American Economic Association, vol. 77(5), pages 1032-36, December.
  14. Ting Liu, 2011. "Credence Goods Markets With Conscientious And Selfish Experts," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 52(1), pages 227-244, 02.
  15. Asher Wolinsky, 1993. "Competition in a Market for Informed Experts' Services," RAND Journal of Economics, The RAND Corporation, vol. 24(3), pages 380-398, Autumn.
  16. Winand Emons, 1994. "Credence Goods and Fraudulent Experts," Diskussionsschriften dp9402, Universitaet Bern, Departement Volkswirtschaft.
  17. Perry, Martin K & Besanko, David, 1991. "Resale Price Maintenance and Manufacturer Competition for Exclusive Dealerships," Journal of Industrial Economics, Wiley Blackwell, vol. 39(5), pages 517-44, September.
  18. Darby, Michael R & Karni, Edi, 1973. "Free Competition and the Optimal Amount of Fraud," Journal of Law and Economics, University of Chicago Press, vol. 16(1), pages 67-88, April.
  19. Bolton, Patrick & Bonanno, Giacomo, 1988. "Vertical Restraints in a Model of Vertical Differentiation," The Quarterly Journal of Economics, MIT Press, vol. 103(3), pages 555-70, August.
  20. Yuk-fai Fong, 2005. "When Do Experts Cheat and Whom Do They Target?," RAND Journal of Economics, The RAND Corporation, vol. 36(1), pages 113-130, Spring.
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