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Advice from Multiple Experts: A Comparison of Simultaneous, Sequential, and Hierarchical Communication

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  • Li Ming

    (Concordia University and CIREQ)

Abstract

In this paper, I analyze an example in which two perfectly informed experts advise a decision maker. Each expert has private information about her own bias. I show that consulting two experts is better than consulting just one. I compare the efficiency of information transmission between simultaneous, sequential, and hierarchical forms of communication. I show that simultaneous communication achieves the highest efficiency, followed by sequential and hierarchical communication. However, hierarchical communication, in which a second expert chooses whether to block the first expert's message, achieves a moderate level of efficiency, even though the decision maker receives only one message. Finally, there are preference settings in which both sequential and hierarchical communication are superior to simultaneous communication.

Suggested Citation

  • Li Ming, 2010. "Advice from Multiple Experts: A Comparison of Simultaneous, Sequential, and Hierarchical Communication," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 10(1), pages 1-24, April.
    • Handle: RePEc:bpj:bejtec:v:10:y:2010:i:1:n:18
    DOI: 10.2202/1935-1704.1490
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    References listed on IDEAS

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    1. Marco Battaglini, 2002. "Multiple Referrals and Multidimensional Cheap Talk," Econometrica, Econometric Society, vol. 70(4), pages 1379-1401, July.
    2. Krehbiel, Keith, 2001. "Plausibility of Signals by a Heterogeneous Committee," Research Papers 1678, Stanford University, Graduate School of Business.
    3. Li, Ming & Madarász, Kristóf, 2008. "When mandatory disclosure hurts: Expert advice and conflicting interests," Journal of Economic Theory, Elsevier, vol. 139(1), pages 47-74, March.
    4. Ming Li, 2008. "Two (talking) heads are not better than one," Economics Bulletin, AccessEcon, vol. 3(63), pages 1-8.
    5. Ivanov, Maxim, 2010. "Communication via a strategic mediator," Journal of Economic Theory, Elsevier, vol. 145(2), pages 869-884, March.
    6. Kay Mitusch & Roland Strausz, 2005. "Mediation in Situations of Conflict and Limited Commitment," The Journal of Law, Economics, and Organization, Oxford University Press, vol. 21(2), pages 467-500, October.
    7. Krehbiel, Keith, 2001. "Plausibility of Signals by a Heterogeneous Committee," American Political Science Review, Cambridge University Press, vol. 95(2), pages 453-457, June.
    8. Ying Chen & Navin Kartik & Joel Sobel, 2008. "Selecting Cheap-Talk Equilibria," Econometrica, Econometric Society, vol. 76(1), pages 117-136, January.
    9. Morgan, John & Stocken, Phillip C, 2003. "An Analysis of Stock Recommendations," RAND Journal of Economics, The RAND Corporation, vol. 34(1), pages 183-203, Spring.
    10. Mylovanov, Tymofiy, 2008. "Veto-based delegation," Journal of Economic Theory, Elsevier, vol. 138(1), pages 297-307, January.
    11. Wouter Dessein, 2002. "Authority and Communication in Organizations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 69(4), pages 811-838.
    12. Maria Goltsman & Johannes Horner & Gregory Pavlov & Francesco Squintani, 2007. "Arbitration, Mediation and Cheap Talk," Discussion Papers 1445, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
    13. Ottaviani, Marco & Sorensen, Peter, 2001. "Information aggregation in debate: who should speak first?," Journal of Public Economics, Elsevier, vol. 81(3), pages 393-421, September.
    14. Gilligan, Thomas W & Krehbiel, Keith, 1987. "Collective Decisionmaking and Standing Committees: An Informational Rationale for Restrictive Amendment Procedures," The Journal of Law, Economics, and Organization, Oxford University Press, vol. 3(2), pages 287-335, Fall.
    15. 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. Yves Oytana & Nathalie Chappe, 2018. "Expert opinion in a tort litigation game," European Journal of Law and Economics, Springer, vol. 46(1), pages 67-107, August.
    2. Esra E. Bayindir & Mehmet Y. Gurdal & Ayca Ozdogan & Ismail Saglam, 2020. "Cheap Talk Games with Two-Senders and Different Modes of Communication," Games, MDPI, vol. 11(2), pages 1-22, April.
    3. Tymofiy Mylovanov & Andriy Zapechelnyuk, 2013. "Optimal Arbitration," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 54(3), pages 769-785, August.
    4. Szalay, Dezső & Deimen, Inga, 2020. "Authority in a theory of the firm," CEPR Discussion Papers 15026, C.E.P.R. Discussion Papers.
    5. Li, Zhuozheng & Rantakari, Heikki & Yang, Huanxing, 2016. "Competitive cheap talk," Games and Economic Behavior, Elsevier, vol. 96(C), pages 65-89.
    6. Killian J. McCarthy & Florian Noseleit, 2022. "Too many cooks spoil the broth: on the impact of external advisors on mergers and acquisitions," Review of Managerial Science, Springer, vol. 16(6), pages 1817-1852, August.
    7. Junichiro Ishida & Takashi Shimizu, 2009. "Cheap Talk with an Informed Receiver," ISER Discussion Paper 0746r, Institute of Social and Economic Research, Osaka University, revised Jun 2015.
    8. McGee, Andrew & Yang, Huanxing, 2013. "Cheap talk with two senders and complementary information," Games and Economic Behavior, Elsevier, vol. 79(C), pages 181-191.
    9. Jeahan Jung & Jeong-Yoo Kim, 2019. "Cheap Talk by Two Senders in the Presence of Network Externalities," Korean Economic Review, Korean Economic Association, vol. 35, pages 249-274.
    10. Mark Thordal-Le Quement, 2016. "The (Human) Sampler's Curses," American Economic Journal: Microeconomics, American Economic Association, vol. 8(4), pages 115-148, November.
    11. Chung, Jeahan & Kim, Jeong-Yoo, 2018. "Cheap talk by multiple speakers in the presence of network externalities," Economics Discussion Papers 2018-9, Kiel Institute for the World Economy (IfW Kiel).

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