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Adverse Selection and Insurance Contracting: A Rank-Dependent Utility Analysis

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Author Info
Matthew Ryan (University of Auckland)
Rhema Vaithianathan (University of Auckland)

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Abstract

Stiglitz (1977) established three well-known features of monopoly insurance markets subject to adverse selection: (i) at least one market segment is served, despite the informational asymmetry; (ii) there is always some screening of risk classes; and (iii) efficiency is sacrificed to achieve screening. We modify Stiglitz's model, replacing his expected utility assumption on consumer behavior with a version of Quiggin's (1982) rank-dependent utility model that has received strong experimental support. We show that none of the conclusions (i)--(iii) is robust to this revision. In particular, asymmetric information need not lead to any loss in efficiency.

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Publisher Info
Article provided by Berkeley Electronic Press in its journal Contributions to Theoretical Economics.

Volume (Year): 3 (2003)
Issue (Month): 1 ()
Pages: 1074-1074
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Handle: RePEc:bep:thecon:v:3:y:2003:i:1:p:1074-1074

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Related research
Keywords: Insurance Rank-Dependent Utility Adverse Selection

Find related papers by JEL classification:
D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

  1. Shi, Shou Yong, 1988. "Rothschild-Stiglitz competitive insurance market under quasilinear preferences," Economics Letters, Elsevier, vol. 27(1), pages 27-30. [Downloadable!] (restricted)
  2. Wakker, Peter P & Thaler, Richard H & Tversky, Amos, 1997. "Probabilistic Insurance," Journal of Risk and Uncertainty, Springer, vol. 15(1), pages 7-28, October. [Downloadable!] (restricted)
  3. Yaari, Menahem E, 1987. "The Dual Theory of Choice under Risk," Econometrica, Econometric Society, vol. 55(1), pages 95-115, January. [Downloadable!] (restricted)
  4. Chateauneuf, Alain & Wakker, Peter, 1999. "An Axiomatization of Cumulative Prospect Theory for Decision under Risk," Journal of Risk and Uncertainty, Springer, vol. 18(2), pages 137-45, August. [Downloadable!] (restricted)
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  5. Segal, Uzi & Spivak, Avia, 1990. "First order versus second order risk aversion," Journal of Economic Theory, Elsevier, vol. 51(1), pages 111-125, June. [Downloadable!] (restricted)
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  6. Tversky, Amos & Wakker, Peter, 1995. "Risk Attitudes and Decision Weights," Econometrica, Econometric Society, vol. 63(6), pages 1255-80, November. [Downloadable!] (restricted)
  7. Massimo Marinacci & Paolo Ghirardato, 2001. "Risk, ambiguity, and the separation of utility and beliefs," ICER Working Papers - Applied Mathematics Series 21-2001, ICER - International Centre for Economic Research. [Downloadable!]
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  8. Diecidue, Enrico & Wakker, Peter P, 2001. " On the Intuition of Rank-Dependent Utility," Journal of Risk and Uncertainty, Springer, vol. 23(3), pages 281-98, November. [Downloadable!] (restricted)
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  9. Hong, Chew Soo & Karni, Edi & Safra, Zvi, 1987. "Risk aversion in the theory of expected utility with rank dependent probabilities," Journal of Economic Theory, Elsevier, vol. 42(2), pages 370-381, August. [Downloadable!] (restricted)
  10. Edi Karni, 1995. "Non-Expected Utility and The Robustness of the Classical Insurance Paradigm: Discussion," The Geneva Risk and Insurance Review, Palgrave Macmillan Journals, vol. 20(1), pages 51-56, June. [Downloadable!] (restricted)
  11. Quiggin, John, 1991. "On the Optimal Design of Lotteries," Economica, London School of Economics and Political Science, vol. 58(229), pages 1-16, February. [Downloadable!] (restricted)
  12. Matthew J. Ryan & Rhema Vaithianathan, 2003. "Medical insurance with rank-dependent utility," Economic Theory, Springer, vol. 22(3), pages 689-698, October. [Downloadable!] (restricted)
  13. Chew, Soo Hong, 1983. "A Generalization of the Quasilinear Mean with Applications to the Measurement of Income Inequality and Decision Theory Resolving the Allais Paradox," Econometrica, Econometric Society, vol. 51(4), pages 1065-92, July. [Downloadable!] (restricted)
  14. Camerer, Colin F & Ho, Teck-Hua, 1994. "Violations of the Betweenness Axiom and Nonlinearity in Probability," Journal of Risk and Uncertainty, Springer, vol. 8(2), pages 167-96, March.
  15. Wakker, Peter P, 2001. "Testing and Characterizing Properties of Nonadditive Measures through Violations of the Sure-Thing Principle," Econometrica, Econometric Society, vol. 69(4), pages 1039-59, July.
  16. Mark J. Machina, 1995. "Non-Expected Utility and The Robustness of the Classical Insurance Paradigm," The Geneva Risk and Insurance Review, Palgrave Macmillan Journals, vol. 20(1), pages 9-50, June. [Downloadable!] (restricted)
  17. Quiggin, John, 1982. "A theory of anticipated utility," Journal of Economic Behavior & Organization, Elsevier, vol. 3(4), pages 323-343, December. [Downloadable!] (restricted)
  18. Hogarth, Robin M & Kunreuther, Howard, 1989. " Risk, Ambiguity, and Insurance," Journal of Risk and Uncertainty, Springer, vol. 2(1), pages 5-35, April.
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Johanna Vásquez Velásquez & Karoll Gómez Portilla, 2004. "Selección adversa en el régimen contributivo de salud: el caso de la EPS de Susalud," BORRADORES DEL CIE 003489, UNIVERSIDAD DE ANTIOQUIA - CIE. [Downloadable!]
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