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Contracting Environments and Efficiency in Markets with Hidden Information: An Experiment

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  • Wanda Mimra
  • Christian Waibel

Abstract

This paper provides the first systematic analysis of the role of contracting environments on market outcomes and efficiency in markets with hidden information using experimental methods. When markets are plagued by hidden information, competition does not necessarily ensure efficient market outcomes. This crucially depends on the nature of the hidden information. We present a parsimonious experimental design that serves to compare the different contracting environments for both types of hidden information markets, private and common values. The degree of equilibrium play that we find is strikingly high, particularly in the complex cases of competitive common values markets.

Suggested Citation

  • Wanda Mimra & Christian Waibel, 2025. "Contracting Environments and Efficiency in Markets with Hidden Information: An Experiment," American Economic Journal: Microeconomics, American Economic Association, vol. 17(3), pages 35-74, August.
    • Handle: RePEc:aea:aejmic:v:17:y:2025:i:3:p:35-74
    DOI: 10.1257/mic.20170293
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    1. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2019. "On competitive nonlinear pricing," Theoretical Economics, Econometric Society, vol. 14(1), January.
    2. Wilson, Charles, 1977. "A model of insurance markets with incomplete information," Journal of Economic Theory, Elsevier, vol. 16(2), pages 167-207, December.
    3. Pierre-Andre Chiappori & Bernard Salanie, 2000. "Testing for Asymmetric Information in Insurance Markets," Journal of Political Economy, University of Chicago Press, vol. 108(1), pages 56-78, February.
    4. Antonio Cabrales & Gary Charness & Marie Villeval, 2011. "Hidden information, bargaining power, and efficiency: an experiment," Experimental Economics, Springer;Economic Science Association, vol. 14(2), pages 133-159, May.
    5. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2014. "Multiple Contracting in Insurance Markets," TSE Working Papers 14-532, Toulouse School of Economics (TSE), revised Sep 2016.
    6. Basov Suren & Yin Xiangkang, 2010. "Optimal Screening by Risk-Averse Principals," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 10(1), pages 1-25, March.
    7. Bernard Salanié, 2017. "Equilibrium in Insurance Markets: An Empiricist’s View," The Geneva Papers on Risk and Insurance Theory, Springer;International Association for the Study of Insurance Economics (The Geneva Association), vol. 42(1), pages 1-14, March.
    8. Andrea Attar & Thomas Mariotti & François Salanié, 2021. "Entry-Proofness and Discriminatory Pricing under Adverse Selection," American Economic Review, American Economic Association, vol. 111(8), pages 2623-2659, August.
    9. 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.
    10. repec:adr:anecst:y:1996:i:43:p:01 is not listed on IDEAS
    11. Vernon L. Smith, 1962. "An Experimental Study of Competitive Market Behavior," Journal of Political Economy, University of Chicago Press, vol. 70(2), pages 111-111.
    12. Eva I. Hoppe & Patrick W. Schmitz, 2013. "Contracting under Incomplete Information and Social Preferences: An Experimental Study," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 80(4), pages 1516-1544.
    13. Pouyet Jérome & Salanié Bernard & Salanié Francois, 2008. "On Competitive Equilibria with Asymmetric Information," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 8(1), pages 1-16, April.
    14. Amy Finkelstein & Kathleen McGarry, 2006. "Multiple Dimensions of Private Information: Evidence from the Long-Term Care Insurance Market," American Economic Review, American Economic Association, vol. 96(4), pages 938-958, September.
    15. Dorra Riahi & Louis Levy-Garboua & Claude Montmarquette, 2013. "Competitive Insurance Markets and Adverse Selection in the Lab," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 38(1), pages 87-113, March.
    16. 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.
    17. Hoppe, Eva I. & Schmitz, Patrick W., 2015. "Do sellers offer menus of contracts to separate buyer types? An experimental test of adverse selection theory," Games and Economic Behavior, Elsevier, vol. 89(C), pages 17-33.
    18. David M. Cutler & Sarah J. Reber, 1998. "Paying for Health Insurance: The Trade-Off between Competition and Adverse Selection," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 113(2), pages 433-466.
    19. Tomas Philipson & John Cawley, 1999. "An Empirical Examination of Information Barriers to Trade in Insurance," American Economic Review, American Economic Association, vol. 89(4), pages 827-846, September.
    20. David M. Cutler & Mark McClellan & Joseph P. Newhouse, 2000. "How Does Managed Care Do It?," RAND Journal of Economics, The RAND Corporation, vol. 31(3), pages 526-548, Autumn.
    21. Wanda Mimra & Achim Wambach, 2014. "New Developments in the Theory of Adverse Selection in Competitive Insurance," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 39(2), pages 136-152, September.
    22. Casey Rothschild, 2015. "Nonexclusivity, Linear Pricing, and Annuity Market Screening," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 82(1), pages 1-32, March.
    23. Lisa L. Posey & Abdullah Yavas, 2007. "Screening equilibria in experimental markets," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 32(2), pages 147-167, December.
    24. Marie-Cécile Fagart, 1996. "Concurrence en contrats, anti-sélection et structure d'information," Annals of Economics and Statistics, GENES, issue 43, pages 1-27.
    25. Charles A. Holt & Susan K. Laury, 2002. "Risk Aversion and Incentive Effects," American Economic Review, American Economic Association, vol. 92(5), pages 1644-1655, December.
    26. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2019. "On competitive nonlinear pricing," Theoretical Economics, Econometric Society, vol. 14(1), January.
    27. 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.
    28. Amy Finkelstein & James Poterba, 2004. "Adverse Selection in Insurance Markets: Policyholder Evidence from the U.K. Annuity Market," Journal of Political Economy, University of Chicago Press, vol. 112(1), pages 183-208, February.
    29. 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.
    30. Riley, John G, 1979. "Informational Equilibrium," Econometrica, Econometric Society, vol. 47(2), pages 331-359, March.
    31. McClellan, Mark & Cutler, David & Newhous, Joseph P., 2000. "How Does Managed Care Do It?," Scholarly Articles 2643884, Harvard University Department of Economics.
    32. Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
    33. 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, March.
    34. Georges Dionne (ed.), 2025. "Handbook of Insurance," Springer Books, Springer, edition 0, number 978-3-031-69674-9, January.
    35. Smith, Vernon L, 1982. "Microeconomic Systems as an Experimental Science," American Economic Review, American Economic Association, vol. 72(5), pages 923-955, December.
    36. Amy Finkelstein & James Poterba, 2002. "Selection Effects in the United Kingdom Individual Annuities Market," Economic Journal, Royal Economic Society, vol. 112(476), pages 28-50, January.
    37. Andrea Attar & Thomas Mariotti & François Salanié, 2011. "Nonexclusive Competition in the Market for Lemons," Econometrica, Econometric Society, vol. 79(6), pages 1869-1918, November.
    38. , & , & ,, 2014. "Nonexclusive competition under adverse selection," Theoretical Economics, Econometric Society, vol. 9(1), January.
    39. Kagel, John H. & Kim, Chung & Moser, Donald, 1996. "Fairness in Ultimatum Games with Asymmetric Information and Asymmetric Payoffs," Games and Economic Behavior, Elsevier, vol. 13(1), pages 100-110, March.
    40. Kerschbamer, Rudolf, 2015. "The geometry of distributional preferences and a non-parametric identification approach: The Equality Equivalence Test," European Economic Review, Elsevier, vol. 76(C), pages 85-103.
    41. Elena Asparouhova, 2006. "Competition in Lending: Theory and Experiments," Review of Finance, European Finance Association, vol. 10(2), pages 189-219.
    42. Thomas Mariotti, 2016. "Multiple Contracting in Insurance Markets," 2016 Meeting Papers 820, Society for Economic Dynamics.
    43. Georges Dionne (ed.), 2025. "Handbook of Insurance," Springer Books, Springer, edition 0, number 978-3-031-69561-2, January.
    44. repec:hal:pseose:hal-00756620 is not listed on IDEAS
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    More about this item

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law
    • L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality

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