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Credence Goods Markets with Conscientious and Selfish Experts

  • Ting Liu

    ()

    (Boston University, Department of Economics)

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I study credence goods markets when there are both sel sh and conscientious experts. The selfish expert is a pro t maximizer. The conscientious expert wants to maximize pro t and repair the consumer's problem. There are two classes of equilibria: uniform-price equilibria and nonuniform-price equilibria. A consumer cannot infer the expert's type from his price list in a uniform-price equilibrium but can do that in a nonuniform-price equilibrium. When the fraction of the conscientious expert is small, the sel sh expert will be honest about the severity of the consumer's problem. When the fraction of the conscientious expert is large, the sel sh expert will cheat the consumer; overcharging the consumer whenever he o ers to repair the problem. Finally, more conscientious experts may result in a larger social loss.

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Paper provided by Boston University - Department of Economics in its series Boston University - Department of Economics - Working Papers Series with number WP2006-058.

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Length: 33 pages
Date of creation: Dec 2006
Date of revision:
Handle: RePEc:bos:wpaper:wp2006-058
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Web page: http://www.bu.edu/econ/

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  1. 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.
  2. Matthew Rabin., 1992. "Incorporating Fairness into Game Theory and Economics," Economics Working Papers 92-199, University of California at Berkeley.
  3. Timothy J. Feddersen & Thomas W. Gilligan, 2001. "Saints and Markets: Activists and the Supply of Credence Goods," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 10(1), pages 149-171, 03.
  4. Ingela Alger & François Salanié, 2006. "A Theory of Fraud and Overtreatment in Experts Markets," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 15(4), pages 853-881, December.
  5. Uwe Dulleck, 2000. "Where Are The Problems with Credence Goods?," Econometric Society World Congress 2000 Contributed Papers 1441, Econometric Society.
  6. Ingela Alger & Regis Renault, 2003. "Screening Ethics when Honest Agents Keep their Word," Boston College Working Papers in Economics 562, Boston College Department of Economics, revised 09 Nov 2004.
  7. 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.
  8. Emons, Winand, 2001. "Credence goods monopolists," International Journal of Industrial Organization, Elsevier, vol. 19(3-4), pages 375-389, March.
  9. Ching-to Albert Ma & Ingela Alger, 1999. "Moral Hazard, Insurance and Some Collusion," FMG Discussion Papers dp318, Financial Markets Group.
  10. 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.
  11. 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.
  12. Lindbeck, Assar & Weibull, Jorgen W, 1988. "Altruism and Time Consistency: The Economics of Fait Accompli," Journal of Political Economy, University of Chicago Press, vol. 96(6), pages 1165-82, December.
  13. Roland Bénabou & Jean Tirole, 2003. "Intrinsic and Extrinsic Motivation," Review of Economic Studies, Oxford University Press, vol. 70(3), pages 489-520.
  14. Winand Emons, 1997. "Credence Goods and Fraudelent Experts," RAND Journal of Economics, The RAND Corporation, vol. 28(1), pages 107-119, Spring.
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