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Decision Rules for Experts with Opposing Interests

Author

Listed:
  • Tymofiy Mylovanov

    (Penn State University)

  • Andriy Zapechelnyuk

    (Queen Mary, University of London)

Abstract

This paper studies optimal decision rules for a decision maker who can consult two experts in an environment without monetary payments. This extends the previous work by Holmström (1984) and Alonso and Matouschek (2008) who consider environments with one expert. In order to derive optimal decision rules, we prove a "constant-threat" result that states that any out-of-equilibrium pair of recommendations by the experts are punished with an action that is independent of their reports. A particular property of an optimal decision rule is that it is simple and constant for a large set of experts' preferences and distribution of their private information. Hence, it is robust in the sense that it is not affected by errors in specifying these features of the environment. By contrast, the constructions of optimal outcomes absent commitment or with only one expert are sensitive to model details.

Suggested Citation

  • Tymofiy Mylovanov & Andriy Zapechelnyuk, 2010. "Decision Rules for Experts with Opposing Interests," Working Papers 674, Queen Mary University of London, School of Economics and Finance.
  • Handle: RePEc:qmw:qmwecw:674
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    File URL: https://www.qmul.ac.uk/sef/media/econ/research/workingpapers/2010/items/wp674.pdf
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    References listed on IDEAS

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    1. Battaglini Marco, 2004. "Policy Advice with Imperfectly Informed Experts," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 4(1), pages 1-34, April.
    2. Vijay Krishna & John Morgan, 2008. "Contracting for information under imperfect commitment," RAND Journal of Economics, RAND Corporation, vol. 39(4), pages 905-925, December.
    3. Marco Battaglini, 2002. "Multiple Referrals and Multidimensional Cheap Talk," Econometrica, Econometric Society, vol. 70(4), pages 1379-1401, July.
    4. Martimort, David & Semenov, Aggey, 2008. "The informational effects of competition and collusion in legislative politics," Journal of Public Economics, Elsevier, vol. 92(7), pages 1541-1563, July.
    5. , & ,, 2008. "Multi-sender cheap talk with restricted state spaces," Theoretical Economics, Econometric Society, vol. 3(1), March.
    6. Ming Li, 2008. "Two (talking) heads are not better than one," Economics Bulletin, AccessEcon, vol. 3(63), pages 1-8.
    7. Kovác, Eugen & Mylovanov, Tymofiy, 2009. "Stochastic mechanisms in settings without monetary transfers: The regular case," Journal of Economic Theory, Elsevier, vol. 144(4), pages 1373-1395, July.
    8. Wolinsky, Asher, 2002. "Eliciting information from multiple experts," Games and Economic Behavior, Elsevier, vol. 41(1), pages 141-160, October.
    9. Koessler, Frédéric & Martimort, David, 2012. "Optimal delegation with multi-dimensional decisions," Journal of Economic Theory, Elsevier, vol. 147(5), pages 1850-1881.
    10. Ehud Kalai & Robert W. Rosenthal, 1976. "Arbitration of Two-Party Disputes Under Ignorance," Discussion Papers 215, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
    11. Li Hao & Wing Suen, 2009. "Viewpoint: Decision‐making in committees," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 42(2), pages 359-392, May.
    12. Helmut Bester & Daniel Krähmer, 2008. "Delegation and incentives," RAND Journal of Economics, RAND Corporation, vol. 39(3), pages 664-682, September.
    13. Nahum D. Melumad & Toshiyuki Shibano, 1991. "Communication in Settings with No. Transfers," RAND Journal of Economics, The RAND Corporation, vol. 22(2), pages 173-198, Summer.
    14. Mark Armstrong & John Vickers, 2010. "A Model of Delegated Project Choice," Econometrica, Econometric Society, vol. 78(1), pages 213-244, January.
    15. Bhaskar Dutta & Arunava Sen, 1991. "A Necessary and Sufficient Condition for Two-Person Nash Implementation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(1), pages 121-128.
    16. Wouter Dessein, 2002. "Authority and Communication in Organizations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 69(4), pages 811-838.
    17. Martimort, David & Semenov, Aggey, 2006. "Continuity in mechanism design without transfers," Economics Letters, Elsevier, vol. 93(2), pages 182-189, November.
    18. Gilat Levy & Ronny Razin, 2007. "On the Limits of Communication in Multidimensional Cheap Talk: A Comment," Econometrica, Econometric Society, vol. 75(3), pages 885-893, May.
    19. Michael Raith, 2008. "Specific knowledge and performance measurement," RAND Journal of Economics, RAND Corporation, vol. 39(4), pages 1059-1079, December.
    20. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-1451, November.
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    Cited by:

    1. Mylovanov, Tymofiy & Zapechelnyuk, Andriy, 2013. "Decision rules revealing commonly known events," Economics Letters, Elsevier, vol. 119(1), pages 8-10.

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    More about this item

    Keywords

    Communication; Information; Noise; Experts; Constant threat;
    All these keywords.

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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