IDEAS home Printed from https://ideas.repec.org/p/iza/izadps/dp4125.html
   My bibliography  Save this paper

Negative Externalities and Equilibrium Existence in Competitive Markets with Adverse Selection

Author

Listed:
  • von Siemens, Ferdinand

    (Goethe University Frankfurt)

  • Kosfeld, Michael

    (Goethe University Frankfurt)

Abstract

Rothschild and Stiglitz (1976) show that there need not exist a competitive equilibrium in markets with adverse selection. Building on their framework we demonstrate that externalities between agents ? an agent's utility upon accepting a contract depends on the average type attracted by the respective principal ? can solve the equilibrium existence problem, even when the size of the externalities is arbitrarily small. Our result highlights the degree of control a principal has over the attractiveness of his contracts as an important feature for equilibrium existence, thereby offering a new perspective on existing theories of competition in markets with adverse selection.

Suggested Citation

  • von Siemens, Ferdinand & Kosfeld, Michael, 2009. "Negative Externalities and Equilibrium Existence in Competitive Markets with Adverse Selection," IZA Discussion Papers 4125, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp4125
    as

    Download full text from publisher

    File URL: https://docs.iza.org/dp4125.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. In-Koo Cho & David M. Kreps, 1987. "Signaling Games and Stable Equilibria," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 102(2), pages 179-221.
    2. Pradeep Dubey & John Geanakoplos, 2002. "Competitive Pooling: Rothschild-Stiglitz Reconsidered," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(4), pages 1529-1570.
    3. Riley, John G, 1979. "Informational Equilibrium," Econometrica, Econometric Society, vol. 47(2), pages 331-359, March.
    4. Hellwig, Martin, 1987. "Some recent developments in the theory of competition in markets with adverse selection ," European Economic Review, Elsevier, vol. 31(1-2), pages 319-325.
    5. Charles I. Jones, 2008. "Intermediate Goods, Weak Links, and Superstars: A Theory of Economic Development," NBER Working Papers 13834, National Bureau of Economic Research, Inc.
    6. Douglas Gale, 1992. "A Walrasian Theory of Markets with Adverse Selection," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 59(2), pages 229-255.
    7. Michael Rothschild & Joseph Stiglitz, 1976. "Equilibrium in Competitive Insurance Markets: An Essay on the Economics of Imperfect Information," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 90(4), pages 629-649.
    8. Bester, Helmut, 1985. "Screening vs. Rationing in Credit Markets with Imperfect Information," American Economic Review, American Economic Association, vol. 75(4), pages 850-855, September.
    9. repec:bla:scandj:v:104:y:2002:i:4:p:515-30 is not listed on IDEAS
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Theodoros M. Diasakos & Kostas Koufopoulos, 2011. "Efficient Nash Equilibrium under Adverse Selection," Carlo Alberto Notebooks 215, Collegio Carlo Alberto.
    2. Diasakos, Theodoros M. & Koufopoulos, Kostas, 2018. "(Neutrally) Optimal Mechanism under Adverse Selection: The canonical insurance problem," Games and Economic Behavior, Elsevier, vol. 111(C), pages 159-186.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. von Siemens, Ferdinand A. & Kosfeld, Michael, 2014. "Team production in competitive labor markets with adverse selection," European Economic Review, Elsevier, vol. 68(C), pages 181-198.
    2. Dosis, Anastasios, 2018. "On signalling and screening in markets with asymmetric information," Journal of Mathematical Economics, Elsevier, vol. 75(C), pages 140-149.
    3. Diasakos, Theodoros M. & Koufopoulos, Kostas, 2018. "(Neutrally) Optimal Mechanism under Adverse Selection: The canonical insurance problem," Games and Economic Behavior, Elsevier, vol. 111(C), pages 159-186.
    4. Anastasios Dosis, 2019. "Interest Rates and Investment Under Competitive Screening and Moral Hazard," Working Papers hal-02130434, HAL.
    5. Li, Anqi & Xing, Yiqing, 2020. "Intermediated implementation," European Economic Review, Elsevier, vol. 123(C).
    6. Martin, Alberto, 2009. "A model of collateral, investment, and adverse selection," Journal of Economic Theory, Elsevier, vol. 144(4), pages 1572-1588, July.
    7. Alberto Martin, 2008. "Adverse selection, credit and efficiency: The case of the missing market," Economics Working Papers 1085, Department of Economics and Business, Universitat Pompeu Fabra, revised Sep 2009.
    8. Inderst, Roman & Wambach, Achim, 2001. "Competitive insurance markets under adverse selection and capacity constraints," European Economic Review, Elsevier, vol. 45(10), pages 1981-1992, December.
    9. Dosis, Anastasios, 2019. "Optimal ex post risk adjustment in markets with adverse selection," Journal of Mathematical Economics, Elsevier, vol. 85(C), pages 52-59.
    10. Theodoros M. Diasakos & Kostas Koufopoulos, 2011. "Efficient Nash Equilibrium under Adverse Selection," Carlo Alberto Notebooks 215, Collegio Carlo Alberto.
    11. Davoodalhosseini, Seyed Mohammadreza, 2019. "Constrained efficiency with adverse selection and directed search," Journal of Economic Theory, Elsevier, vol. 183(C), pages 568-593.
    12. Noldeka, G. & Samuelson, L., 1994. "Learning to Signal in Market," Working papers 9409, Wisconsin Madison - Social Systems.
    13. Daniel McFadden & Carlos Noton & Pau Olivella, "undated". "Remedies for Sick Insurance," Working Papers 620, Barcelona School of Economics.
    14. Alberto Bisin & Piero Gottardi, 2006. "Efficient Competitive Equilibria with Adverse Selection," Journal of Political Economy, University of Chicago Press, vol. 114(3), pages 485-516, June.
    15. De Feo, Giuseppe & Hindriks, Jean, 2014. "Harmful competition in insurance markets," Journal of Economic Behavior & Organization, Elsevier, vol. 106(C), pages 213-226.
    16. Wanda Mimra & Achim Wambach, 2011. "A Game-Theoretic Foundation for the Wilson Equilibrium in Competitive Insurance Markets with Adverse Selection," CESifo Working Paper Series 3412, CESifo.
    17. Noldeke, Georg & Samuelson, Larry, 1997. "A Dynamic Model of Equilibrium Selection in Signaling Markets," Journal of Economic Theory, Elsevier, vol. 73(1), pages 118-156, March.
    18. Wanda Mimra & Achim Wambach, 2019. "Contract withdrawals and equilibrium in competitive markets with adverse selection," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 67(4), pages 875-907, June.
    19. Zink, Helmut, 1995. "The role of market intransparency in insurance market models," European Journal of Political Economy, Elsevier, vol. 11(2), pages 335-359, June.
    20. Dionne, G. & Doherty, N., 1991. "Adverse Selection in Insurance Markets: a Selective Survey," Cahiers de recherche 9105, Universite de Montreal, Departement de sciences economiques.

    More about this item

    Keywords

    asymmetric information; competition; adverse selection; externality;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:iza:izadps:dp4125. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Holger Hinte (email available below). General contact details of provider: https://edirc.repec.org/data/izaaade.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.