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Equilibrium, Adverse Selection, and Statistical Distributions


  • Helton Saulo

    () (Department of Economics - Federal University of Rio Grande do Sul / Porto Alegre, RS, Brazil)

  • Jeremias Leao

    () (Department of Mathematics - Federal University of Piaui / Picos, PI, Brazil)


This paper addresses the problem of multiple equilibria in markets with adverse selection. Akerlof (1970) identified an unique equilibrium of the total market failure under adverse selection. Posterioly, Wilson (1979, 1980) argued that the presence of adverse selection may lead to multiple equilibria. In particular, this paper extends the work of Rose (1993), who stated that the existence of multiple equilibria depends on the distribution of quality. Rose found that multiple equilibria are highly unlikely for most standard probability distributions. This work considers additional statistical distributions for quality. The simulation results suggest the existence of multiple equilibria when the quality follows a beta normal distribution.

Suggested Citation

  • Helton Saulo & Jeremias Leao, 2011. "Equilibrium, Adverse Selection, and Statistical Distributions," Economics Bulletin, AccessEcon, vol. 31(3), pages 2066-2074.
  • Handle: RePEc:ebl:ecbull:eb-11-00178

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    References listed on IDEAS

    1. Panu Poutvaara & Andreas Wagener, 2004. "The Invisible Hand Plays Dice: Eventualities in Religious Markets," CESifo Working Paper Series 1238, CESifo Group Munich.
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    More about this item


    Adverse Selection; Multiple Equilibria; Statistical Distributions; Akerlof-Wilson Model.;

    JEL classification:

    • C1 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General
    • D0 - Microeconomics - - General


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