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Selection in Insurance Markets: Theory and Empirics in Pictures

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  • Liran Einav
  • Amy Finkelstein
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    Abstract

    We present a graphical framework for analyzing both theoretical and empirical work on selection in insurance markets. We begin by using this framework to review the “textbook” adverse selection environment and its implications for insurance allocation, social welfare, and public policy. We then discuss several important extensions to this classical treatment that are necessitated by important real world features of insurance markets and which can be easily incorporated in the basic framework. Finally, we use the same graphical approach to discuss the intuition behind recently developed empirical methods for testing for the existence of selection and examining its welfare consequences. We conclude by discussing some important issues that are not well-handled by this framework and which, perhaps not unrelatedly, have been little addressed by the existing empirical work.

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    File URL: http://www.nber.org/papers/w16723.pdf
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    Bibliographic Info

    Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 16723.

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    Date of creation: Jan 2011
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    Publication status: published as “Selection in Insurance Markets: Theory and Empirics in Pictures,” with Amy Finkelstein, Journal of Economics Perspectives 25(1), 1 15 - 138 , Winter 2011 .
    Handle: RePEc:nbr:nberwo:16723

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    1. De Meza, D. & Webb, D.C., 2000. "Advantageous Selection in Insurance Market," Discussion Papers 0007, Exeter University, Department of Economics.
    2. Hanming Fang & Michael P. Keane & Dan Silverman, 2006. "Sources of Advantageous Selection: Evidence from the Medigap Insurance Market," NBER Working Papers 12289, National Bureau of Economic Research, Inc.
    3. Joseph P. Newhouse, 2004. "Pricing the Priceless: A Health Care Conundrum," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262640589, December.
    4. Alma Cohen & Peter Siegelman, 2010. "Testing for Adverse Selection in Insurance Markets," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 77(1), pages 39-84.
    5. Pierre-André Chiappori & Bruno Jullien & Bernard Salanié & François Salanié, 2002. "Asymmetric Information in Insurance : General Testable Implications," Working Papers 2002-42, Centre de Recherche en Economie et Statistique.
    6. Liran Einav & Amy Finkelstein & Jonathan Levin, 2010. "Beyond Testing: Empirical Models of Insurance Markets," Annual Review of Economics, Annual Reviews, vol. 2(1), pages 311-336, 09.
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    Cited by:
    1. Valentino Dardanoni & Paolo Li Donni, 2012. "Incentive and Selection Effects of Medigap Insurance on Inpatient Care," EIEF Working Papers Series 1203, Einaudi Institute for Economics and Finance (EIEF), revised Feb 2012.
    2. Andre Veiga & E. Glen Weyl, 2011. "Multidimensional Heterogeneity and Platform Design," Working Papers 11-33, NET Institute, revised Nov 2011.
    3. Florian Scheuer & Kent Smetters, 2014. "Could a Website Really Have Doomed the Health Exchanges? Multiple Equilibria, Initial Conditions and the Construction of the Fine," NBER Working Papers 19835, National Bureau of Economic Research, Inc.
    4. Johar, Meliyanni & Savage, Elizabeth, 2012. "Sources of advantageous selection: Evidence using actual health expenditure risk," Economics Letters, Elsevier, vol. 116(3), pages 579-582.
    5. Denise Doiron & Denzil G Fiebig & Agne Suziedelyte, 2013. "Hips and hearts: the variation in incentive effects of insurance across hospital procedures," Discussion Papers 2013-14, School of Economics, The University of New South Wales.
    6. Jacob Glazer & Thomas McGuire & Julie Shi, 2014. "Risk Adjustment of Health Plan Payments to Correct Inefficient Plan Choice from Adverse Selection," NBER Working Papers 19998, National Bureau of Economic Research, Inc.
    7. Ian Jewitt & Clare Leaver & Heski Bar-Isaac, 2014. "Asymmetric Information and Adverse Selection," Economics Series Working Papers 695, University of Oxford, Department of Economics.
    8. Lee, Yong-Woo, 2012. "Asymmetric information and the demand for private health insurance in Korea," Economics Letters, Elsevier, vol. 116(3), pages 284-287.
    9. Jacob Glazer & Thomas G. McGuire & Julie Shi, 2013. "Risk Adjustment of Health Plan Payments to Correct Inefficient Plan Choice from Adverse Selection," NBER Chapters, in: Measuring and Modeling Health Care Costs National Bureau of Economic Research, Inc.
    10. Yiyan Liu & Ginger Zhe Jin, 2013. "Employer Contribution and Premium Growth in Health Insurance," NBER Working Papers 19760, National Bureau of Economic Research, Inc.
    11. Raj Chetty & Amy Finkelstein, 2012. "Social Insurance: Connecting Theory to Data," NBER Working Papers 18433, National Bureau of Economic Research, Inc.

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