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Cream Skimming, Dregs Skimming, and Pooling: On the Dynamics of Competitive Screening

  • Lund, Diderik

    (Department of Economics, Copenhagen Business School)

  • Nilssen, Tore

    (Department of Economics, Copenhagen Business School)

We discuss the existence of a pooling equilibrium in a two-period model of an insurance market with asymmetric information. We solve the model numerically. We pay particular attention to the reasons for non-existence in cases where no pooling equilibrium exists. In addition to the phenom- enon of cream skimming emphasized in earlier literature, we here point to the the importance of the opposite: dregs skimming, whereby high-risk consumers are proÞtably detracted from the candidate pooling contract.

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File URL: http://openarchive.cbs.dk/cbsweb/handle/10398/7596
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Paper provided by Copenhagen Business School, Department of Economics in its series Working Papers with number 01-2003.

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Length: 24 pages
Date of creation: 20 Mar 2003
Date of revision:
Handle: RePEc:hhs:cbsnow:2003_001
Contact details of provider: Postal: Department of Economics, Copenhagen Business School, Solbjerg Plads 3 C, 5. sal, DK-2000 Frederiksberg, Denmark
Phone: 38 15 25 75
Fax: 38 15 34 99
Web page: http://www.cbs.dk/departments/econ/
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  1. Dionne, G. & Doherty, N., 1991. "Adverse Selection, Commitment and Renegotiation : Extention to and Evidence From Insurance Markets," Cahiers de recherche 9134, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
  2. Asheim, Geir B. & Nilssen, Tore, 1996. "Non-discriminating renegotiation in a competitive insurance market," European Economic Review, Elsevier, vol. 40(9), pages 1717-1736, December.
  3. Rothschild, Michael & Stiglitz, Joseph E, 1976. "Equilibrium in Competitive Insurance Markets: An Essay on the Economics of Imperfect Information," The Quarterly Journal of Economics, MIT Press, vol. 90(4), pages 630-49, November.
  4. Parigi, Bruno M., 1994. "Self selection in a dynamic credit model," European Journal of Political Economy, Elsevier, vol. 10(3), pages 571-590, October.
  5. Szpiro, George G, 1986. "Measuring Risk Aversion: An Alternative Approach," The Review of Economics and Statistics, MIT Press, vol. 68(1), pages 156-59, February.
  6. Nilssen, Tore, 2000. "Consumer lock-in with asymmetric information," International Journal of Industrial Organization, Elsevier, vol. 18(4), pages 641-666, May.
  7. Stiglitz, Joseph E, 1977. "Monopoly, Non-linear Pricing and Imperfect Information: The Insurance Market," Review of Economic Studies, Wiley Blackwell, vol. 44(3), pages 407-30, October.
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