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Information in Tullock contest

Author

Listed:
  • Aiche, A.
  • Einy, Ezra
  • Haimanko, Ori
  • Moreno, Diego
  • Selay, A.
  • Shitovitz, Benyamin

Abstract

We study the effect of changes of players' information on the equilibrium efforts and payoffs of Tullock contests in which the common value of the prize is uncertain. When the diseconomies of scale in exerting effort increase at a large (small) rate, in contests with symmetric information expected effort decreases (increases) as players become better informed, while in two-player contests with asymmetric information a player with information advantage exerts less (more) effort, in expectation, than his opponent. In classic Tullock contests with symmetric information the equilibrium expected effort and pay off are invariant to the information available to the players. And when information is asymmetric, a player's information advantage is rewarded. Moreover, in two-player contests, while both players exert the same expected effort regardless of their information, expected effort is smaller when one player has information advantage than when both players have the same information.Interestingly, the player with information advantage wins the prize less frequently than his opponent.

Suggested Citation

  • Aiche, A. & Einy, Ezra & Haimanko, Ori & Moreno, Diego & Selay, A. & Shitovitz, Benyamin, 2017. "Information in Tullock contest," UC3M Working papers. Economics 25820, Universidad Carlos III de Madrid. Departamento de Economía.
    • Handle: RePEc:cte:werepe:25820
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    Cited by:

    1. is not listed on IDEAS
    2. Cohen, Din & Sela, Aner, 2020. "Common-value group contests with asymmetric information," Economics Letters, Elsevier, vol. 192(C).
    3. Juan Beccuti & Marc M ller, 2020. "Fighting for Lemons: The Encouragement Effect in Dynamic Contests with Private Information," Diskussionsschriften dp2017, Universitaet Bern, Departement Volkswirtschaft.
    4. Robertson, Matthew J., 2025. "Competitive outcomes in a Cournot-Tullock contest," Economics Letters, Elsevier, vol. 250(C).
    5. Ezra Einy & Diego Moreno & Aner Sela, 2020. "Continuity and robustness of Bayesian equilibria in Tullock contests," Economic Theory Bulletin, Springer;Society for the Advancement of Economic Theory (SAET), vol. 8(2), pages 333-345, October.

    More about this item

    Keywords

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    JEL classification:

    • 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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