IDEAS home Printed from https://ideas.repec.org/p/fth/aunaec/340.html
   My bibliography  Save this paper

Equilibrium in Competitive Insurance Markets with Ex Ante Adverse Slection and Ex Post Moral Hazard

Author

Listed:
  • Jack, W.

Abstract

Existence of pure strategy equilibria is studied in insurance markets that exhibit both ex ante adverse selection of the Rothschild-Stiglitz-Wilson type, and ex post hidden information moral hazard. It is found that ex post moral hazard has two offsetting effects on the existence of equilibrium, and that in general it is difficult to say whether an equilibrium is more or less likely to exist.

Suggested Citation

  • Jack, W., 1998. "Equilibrium in Competitive Insurance Markets with Ex Ante Adverse Slection and Ex Post Moral Hazard," Papers 340, Australian National University - Department of Economics.
    • Handle: RePEc:fth:aunaec:340
    as

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a search for a similarly titled item that would be available.

    Other versions of this item:

    References listed on IDEAS

    as
    1. Thomas Buchmueller & John Dinardo, 2002. "Did Community Rating Induce an Adverse Selection Death Spiral? Evidence from New York, Pennsylvania, and Connecticut," American Economic Review, American Economic Association, vol. 92(1), pages 280-294, March.
    2. Manning, Willard G, et al, 1987. "Health Insurance and the Demand for Medical Care: Evidence from a Randomized Experiment," American Economic Review, American Economic Association, vol. 77(3), pages 251-277, June.
    3. Myerson, Roger B, 1979. "Incentive Compatibility and the Bargaining Problem," Econometrica, Econometric Society, vol. 47(1), pages 61-73, January.
    4. David M. Cutler & Richard J. Zeckhauser, 1998. "Adverse Selection in Health Insurance," NBER Chapters, in: Frontiers in Health Policy Research, Volume 1, pages 1-32, National Bureau of Economic Research, Inc.
    5. Partha Dasgupta & Eric Maskin, 1986. "The Existence of Equilibrium in Discontinuous Economic Games, I: Theory," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 53(1), pages 1-26.
    6. Jack, William & Sheiner, Louise, 1997. "Welfare-Improving Health Expenditure Subsidies," American Economic Review, American Economic Association, vol. 87(1), pages 206-221, March.
    7. Pauly, Mark V, 1986. "Taxation, Health Insurance, and Market Failure in the Medical Economy," Journal of Economic Literature, American Economic Association, vol. 24(2), pages 629-675, June.
    8. Partha Dasgupta & Eric Maskin, 1986. "The Existence of Equilibrium in Discontinuous Economic Games, II: Applications," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 53(1), pages 27-41.
    9. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, December.
    10. 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.
    11. J. A. Mirrlees, 1971. "An Exploration in the Theory of Optimum Income Taxation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 38(2), pages 175-208.
    12. Wilson, Charles, 1977. "A model of insurance markets with incomplete information," Journal of Economic Theory, Elsevier, vol. 16(2), pages 167-207, December.
    13. Richard J. Arnott & Joseph E. Stiglitz, 1988. "The Basic Analytics of Moral Hazard," NBER Working Papers 2484, National Bureau of Economic Research, Inc.
    14. Townsend, Robert M., 1979. "Optimal contracts and competitive markets with costly state verification," Journal of Economic Theory, Elsevier, vol. 21(2), pages 265-293, October.
    15. George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 84(3), pages 488-500.
    16. Feldstein, Martin & Friedman, Bernard, 1977. "Tax subsidies, the rational demand for insurance and the health care crisis," Journal of Public Economics, Elsevier, vol. 7(2), pages 155-178, April.
    17. Chernew, Michael E. & Frick, Kevin D., 1999. "The impact of managed care on the existence of equilibrium in health insurance markets," Journal of Health Economics, Elsevier, vol. 18(5), pages 571-590, October.
    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. Wang, Hong & Zhang, Licheng & Yip, Winnie & Hsiao, William, 2006. "Adverse selection in a voluntary Rural Mutual Health Care health insurance scheme in China," Social Science & Medicine, Elsevier, vol. 63(5), pages 1236-1245, September.
    2. Marco A. Castaneda & James Marton, 2013. "Employer-Provided Health Insurance and the Adverse Selection Problem," Public Finance Review, , vol. 41(1), pages 3-36, January.
    3. Richard Dusansky & Çağatay Koç, 2010. "Implications of the Interaction Between Insurance Choice and Medical Care Demand," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 77(1), pages 129-144, March.
    4. Richard Dusansky & Çağatay Koç, 2016. "Individual Welfare When Consumers Can Shop For Health Insurance," Economic Inquiry, Western Economic Association International, vol. 54(2), pages 1283-1290, April.
    5. Xinyan Shi & Lydia Gan, 2023. "Equilibrium in Competitive Insurance Markets with Medical Tourism," Studies in Microeconomics, , vol. 11(2), pages 246-269, August.

    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. Joseph E. Stiglitz, 2004. "Information and the Change in the Paradigm in Economics, Part 2," The American Economist, Sage Publications, vol. 48(1), pages 17-49, March.
    2. Joseph E. Stiglitz & Jungyoll Yun & Andrew Kosenko, 2017. "Equilibrium in a Competitive Insurance Market Under Adverse Selection with Endogenous Information," NBER Working Papers 23556, National Bureau of Economic Research, Inc.
    3. Selden, Thomas M., 1999. "Premium subsidies for health insurance: excessive coverage vs. adverse selection," Journal of Health Economics, Elsevier, vol. 18(6), pages 709-725, December.
    4. Xinyan Shi & Lydia Gan, 2023. "Equilibrium in Competitive Insurance Markets with Medical Tourism," Studies in Microeconomics, , vol. 11(2), pages 246-269, August.
    5. Andrea Attar & Thomas Mariotti & François Salanié, 2020. "The Social Costs of Side Trading," The Economic Journal, Royal Economic Society, vol. 130(630), pages 1608-1622.
    6. Dionne, G. & Doherty, N., 1991. "Adverse Selection In Insurance Markets: A Selective Survey," Cahiers de recherche 9105, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
    7. Sebastian Panthöfer, 2016. "Risk Selection under Public Health Insurance with Opt‐Out," Health Economics, John Wiley & Sons, Ltd., vol. 25(9), pages 1163-1181, September.
    8. Bruno Biais & Thomas Mariotti, 2005. "Strategic Liquidity Supply and Security Design," Review of Economic Studies, Oxford University Press, vol. 72(3), pages 615-649.
    9. Cutler, David M. & Zeckhauser, Richard J., 2000. "The anatomy of health insurance," Handbook of Health Economics, in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 11, pages 563-643, Elsevier.
    10. Raj Chetty & Amy Finkelstein, 2012. "Social Insurance: Connecting Theory to Data," NBER Working Papers 18433, National Bureau of Economic Research, Inc.
    11. K. P. M. Winssen & R. C. Kleef & W. P. M. M. Ven, 2017. "A voluntary deductible in health insurance: the more years you opt for it, the lower your premium?," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 18(2), pages 209-226, March.
    12. K. P. M. Winssen & R. C. Kleef & W. P. M. M. Ven, 2018. "Can premium differentiation counteract adverse selection in the Dutch supplementary health insurance? A simulation study," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 19(5), pages 757-768, June.
    13. Nick Netzer & Florian Scheuer, 2014. "A Game Theoretic Foundation Of Competitive Equilibria With Adverse Selection," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 55(2), pages 399-422, May.
    14. Raj Chetty & Emmanuel Saez, 2010. "Optimal Taxation and Social Insurance with Endogenous Private Insurance," NBER Chapters, in: Income Taxation, Trans-Atlantic Public Economics Seminar (TAPES), pages 85-114, National Bureau of Economic Research, Inc.
    15. 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.
    16. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2021. "Competitive Nonlinear Pricing under Adverse Selection," TSE Working Papers 21-1201, Toulouse School of Economics (TSE), revised Aug 2022.
    17. Dionne, Georges & Fombaron, Nathalie & Doherty, Neil, 2012. "Adverse selection in insurance contracting," Working Papers 12-8, HEC Montreal, Canada Research Chair in Risk Management.
    18. Dionne, Georges, 2012. "The empirical measure of information problems with emphasis on insurance fraud and dynamic data," Working Papers 12-10, HEC Montreal, Canada Research Chair in Risk Management.
    19. Kosenko, Andrew & Stiglitz, Joseph & Yun, Jungyoll, 2023. "Bilateral information disclosure in adverse selection markets with nonexclusive competition," Journal of Economic Behavior & Organization, Elsevier, vol. 205(C), pages 144-168.
    20. Dionne, Georges, 1998. "La mesure empirique des problèmes d’information," L'Actualité Economique, Société Canadienne de Science Economique, vol. 74(4), pages 585-606, décembre.

    More about this item

    Keywords

    INSURANCE ; ADVERSE SELECTION ; MORAL HAZARD;
    All these keywords.

    JEL classification:

    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty
    • I1 - Health, Education, and Welfare - - Health

    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:fth:aunaec:340. 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: Thomas Krichel (email available below). General contact details of provider: https://edirc.repec.org/data/dranuau.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.