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Efficient Competition through Cheap Talk: Competing Auctions and Competitive Search without Ex Ante Price Commitment

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  • Kircher, Philipp
  • Kim, Kyungmin

Abstract

We consider a frictional two-sided matching market in which one side uses public cheap-talk announcements so as to attract the other side. We show that if the first-price auction is adopted as the trading protocol, then cheap talk can be perfectly informative, and the resulting market outcome is efficient, constrained only by search frictions. We also show that the performance of an alternative trading protocol in the cheap-talk environment depends on the level of price dispersion generated by the protocol: If a trading protocol compresses (spreads) the distribution of prices relative to the first-price auction, then an efficient fully revealing equilibrium always (never) exists. Our results identify the settings in which cheap talk can serve as an efficient competitive instrument, in the sense that the central insights from the literature on competing auctions and competitive search continue to hold unaltered even without ex ante price commitment.

Suggested Citation

  • Kircher, Philipp & Kim, Kyungmin, 2013. "Efficient Competition through Cheap Talk: Competing Auctions and Competitive Search without Ex Ante Price Commitment," CEPR Discussion Papers 9785, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:9785
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    Cited by:

    1. James Albrecht & Pieter Gautier & Susan Vroman, 2016. "Directed Search in the Housing Market," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 19, pages 218-231, January.
    2. Lester, Benjamin & Visschers, Ludo & Wolthoff, Ronald, 2015. "Meeting technologies and optimal trading mechanisms in competitive search markets," Journal of Economic Theory, Elsevier, vol. 155(C), pages 1-15.
    3. Lester, Benjamin & Visschers, Ludo & Wolthoff, Ronald, 2014. "Meeting technologies and optimal trading mechanisms in competitive search markets," 2007 Annual Meeting, July 29-August 1, 2007, Portland, Oregon TN 2015-36, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    4. Derek Stacey, 2016. "Commitment And Costly Signaling In Decentralized Markets," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 57(4), pages 1507-1533, November.
    5. Matthew Backus & Tom Blake & Steven Tadelis, 2015. "Cheap Talk, Round Numbers, and the Economics of Negotiation," NBER Working Papers 21285, National Bureau of Economic Research, Inc.

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    More about this item

    Keywords

    Directed search; Competitive search; Commitment; Cheap talk;
    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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