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Equilibrium in a decentralized market with adverse selection

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  • Max R. Blouin

Abstract

This paper deals with trade volume and distribution of surplus in markets subject to adverse selection. In a model where two qualities of a good exist, I show that if trade is decentralized (i.e. conducted via random pairwise meetings of agents), then all units of the good are traded, and all agents have positive ex-ante expected payoffs. This feature is present regardless of the quality distribution, and persists in the limit as discounting is made negligible. This offers a sharp contrast to models of centralized trade with adverse selection (Akerlof, Wilson). Copyright Springer-Verlag Berlin Heidelberg 2003

Suggested Citation

  • Max R. Blouin, 2003. "Equilibrium in a decentralized market with adverse selection," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 22(2), pages 245-262, September.
    • Handle: RePEc:spr:joecth:v:22:y:2003:i:2:p:245-262
    DOI: 10.1007/s00199-002-0294-7
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    Citations

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    Cited by:

    1. Braz Camargo & Dino Gerardi & Lucas Maestri, 2020. "Efficiency in Decentralised Markets with Aggregate Uncertainty," The Economic Journal, Royal Economic Society, vol. 130(626), pages 446-461.
    2. Barsanetti, Bruno & Camargo, Braz, 2022. "Signaling in dynamic markets with adverse selection," Journal of Economic Theory, Elsevier, vol. 206(C).
    3. Santanu Roy, 2014. "Dynamic sorting in durable goods markets with buyer heterogeneity," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 47(3), pages 1010-1031, August.
    4. Daniel McFadden & Carlos Noton & Pau Olivella, "undated". "Remedies for Sick Insurance," Working Papers 620, Barcelona School of Economics.
    5. Camargo, Braz & Lester, Benjamin, 2014. "Trading dynamics in decentralized markets with adverse selection," Journal of Economic Theory, Elsevier, vol. 153(C), pages 534-568.
    6. Moreno, Diego & Wooders, John, 2016. "Dynamic markets for lemons: performance, liquidity, and policy intervention," Theoretical Economics, Econometric Society, vol. 11(2), May.
    7. Taneli Mäkinen & Francesco Palazzo, 2017. "The double bind of asymmetric information in over-the-counter markets," Temi di discussione (Economic working papers) 1128, Bank of Italy, Economic Research and International Relations Area.
    8. Timo Vesala, 2008. "Middlemen And The Adverse Selection Problem," Bulletin of Economic Research, Wiley Blackwell, vol. 60(1), pages 1-11, January.
    9. Clara Ponsati & Jozsef Sakovics, 2005. "Markets for professional services: queues and mediocrity," Edinburgh School of Economics Discussion Paper Series 133, Edinburgh School of Economics, University of Edinburgh.
    10. Bilancini, Ennio & Boncinelli, Leonardo, 2016. "Dynamic adverse selection and the supply size," European Economic Review, Elsevier, vol. 83(C), pages 233-242.
    11. Klaus Kultti & Eeva Mauring & Juuso Vanhala & Timo Vesala, 2015. "Adverse Selection In Dynamic Matching Markets," Bulletin of Economic Research, Wiley Blackwell, vol. 67(2), pages 115-133, April.
    12. Palazzo, Francesco, 2017. "Search costs and the severity of adverse selection," Research in Economics, Elsevier, vol. 71(1), pages 171-197.
    13. Ponsatí­, Clara & Sákovics, József, 2008. "Queues, not just mediocrity: Inefficiency in decentralized markets with vertical differentiation," International Journal of Industrial Organization, Elsevier, vol. 26(4), pages 998-1014, July.

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