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Selection in Insurance Markets: Theory and Emprirics in Pictures

Author

Listed:
  • Liran Einav

    (Economics Department, Stanford University)

  • Amy Finkelstein

    (Massachusetts Institute of Technology)

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 then 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.

Suggested Citation

  • Liran Einav & Amy Finkelstein, 2011. "Selection in Insurance Markets: Theory and Emprirics in Pictures," Discussion Papers 10-016, Stanford Institute for Economic Policy Research.
    • Handle: RePEc:sip:dpaper:10-016
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    File URL: http://www-siepr.stanford.edu/repec/sip/10-016.pdf
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    References listed on IDEAS

    as
    1. Pierre‐André Chiappori & Bruno Jullien & Bernard Salanié & François Salanié, 2006. "Asymmetric information in insurance: general testable implications," RAND Journal of Economics, RAND Corporation, vol. 37(4), pages 783-798, December.
    2. 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, September.
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    5. Liran Einav & Amy Finkelstein & Mark R. Cullen, 2010. "Estimating Welfare in Insurance Markets Using Variation in Prices," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 125(3), pages 877-921.
    6. de Meza, David & Webb, David C, 2001. "Advantageous Selection in Insurance Markets," RAND Journal of Economics, The RAND Corporation, vol. 32(2), pages 249-262, Summer.
    7. Hanming Fang & Michael P. Keane & Dan Silverman, 2008. "Sources of Advantageous Selection: Evidence from the Medigap Insurance Market," Journal of Political Economy, University of Chicago Press, vol. 116(2), pages 303-350, April.
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    12. David Hemenway, 1990. "Propitious Selection," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 105(4), pages 1063-1069.
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    17. Pierre‐André Chiappori & Bruno Jullien & Bernard Salanié & François Salanié, 2006. "Asymmetric information in insurance: general testable implications," RAND Journal of Economics, The RAND Corporation, vol. 37(4), pages 783-798, December.
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    More about this item

    Keywords

    Insurance Markets; Selection; social welfare; public policy;
    All these keywords.

    JEL classification:

    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies
    • I11 - Health, Education, and Welfare - - Health - - - Analysis of Health Care Markets

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