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Affiliation, Equilibrium Existence and Revenue Ranking of Auctions

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  • Luciano De Castro

Abstract

Affiliation has been a prominent assumption in the study of economic models with statistical dependence. Despite its large number of applications, especially in auction theory, affiliation has limitations that are important to be aware of. This paper shows that affiliation is a restrictive condition and the intuition usually given for its adoption may be misleading. Also, other usual justifications for affiliation are not compelling. Moreover, some implications of affiliation — namely, equilibrium existence in first-price auctions and the revenue dominance of second-price auctions — do not generalize to other definitions of positive dependence. JEL Classification Numbers: C62, C72, D44, D82.

Suggested Citation

  • Luciano De Castro, 2010. "Affiliation, Equilibrium Existence and Revenue Ranking of Auctions," Discussion Papers 1530, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  • Handle: RePEc:nwu:cmsems:1530
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Hickman Brent R. & Hubbard Timothy P. & Sağlam Yiğit, 2012. "Structural Econometric Methods in Auctions: A Guide to the Literature," Journal of Econometric Methods, De Gruyter, vol. 1(1), pages 67-106, August.
    2. Kotowski, Maciej H. & Li, Fei, 2014. "On the continuous equilibria of affiliated-value, all-pay auctions with private budget constraints," Games and Economic Behavior, Elsevier, vol. 85(C), pages 84-108.
    3. Rosa, Benjamin, 2016. "Resident Bid Preference, Affiliation, and Procurement Competition: Evidence from New Mexico," MPRA Paper 68759, University Library of Munich, Germany.
    4. Abhishek, Vineet & Hajek, Bruce & Williams, Steven R., 2015. "On bidding with securities: Risk aversion and positive dependence," Games and Economic Behavior, Elsevier, vol. 90(C), pages 66-80.

    More about this item

    Keywords

    affiliation; positive dependence; statistical dependence of types; conditional independence; de Finetti’s theorem; minimally informative random variable; auctions; pure strategy equilibrium; revenue ranking.;

    JEL classification:

    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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