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Tullock contests with asymmetric information

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  • Einy, Ezra
  • Haimanko, Ori
  • Sela, A.
  • Shitovitz, Benyamin

Abstract

We show that under standard assumptions a Tullock contest with asymmetric information has a pure strategy Bayesian equilibrium. Moreover, two-player common-value Tullock contests in which one of the players has an information advantage have a unique equilibrium. In equilibrium both players exert the same expected effort, and although the player with information advantage wins the prize with probability less than one-half, his payoff is greater or equal to that of his opponent. In common-value Tullock contests with more players any information advantage is rewarded, but the other properties of two players contests do not hold

Suggested Citation

  • Einy, Ezra & Haimanko, Ori & Sela, A. & Shitovitz, Benyamin, 2013. "Tullock contests with asymmetric information," UC3M Working papers. Economics we1314, Universidad Carlos III de Madrid. Departamento de Economía.
    • Handle: RePEc:cte:werepe:we1314
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    Cited by:

    1. Ezra Einy & Mridu Prabal Goswami & Ori Haimanko & Ram Orzach & Aner Sela, 2017. "Common-value all-pay auctions with asymmetric information," International Journal of Game Theory, Springer;Game Theory Society, vol. 46(1), pages 79-102, March.
    2. Ezra Einy & Diego Moreno & Benyamin Shitovitz, 2017. "The value of public information in common-value Tullock contests," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 63(4), pages 925-942, April.
    3. Christian Ewerhart & Federico Quartieri, 2020. "Unique equilibrium in contests with incomplete information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 70(1), pages 243-271, July.
    4. Sharma, Priyanka & Wagman, Liad, 2020. "Advertising and Voter Data in Asymmetric Political Contests," Information Economics and Policy, Elsevier, vol. 52(C).
    5. Alexander Matros & Alex Possajennikov, 2014. "Common Value Allocation Mechanisms with Private Information: Lotteries or Auctions?," Discussion Papers 2014-07, The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham.
    6. Ford, Weixing & Lian, Zeng & Lien, Jaimie W. & Zheng, Jie, 2020. "Information sharing in a contest game with group identity," Economics Letters, Elsevier, vol. 189(C).
    7. Sakshi Gupta & Ram Singh, 2018. "On Existence and Properties of Pure-strategy Equilibria under Contests," Working papers 288, Centre for Development Economics, Delhi School of Economics.
    8. Ori Haimanko, 2022. "Equilibrium existence in two-player contests without absolute continuity of information," Economic Theory Bulletin, Springer;Society for the Advancement of Economic Theory (SAET), vol. 10(1), pages 27-39, May.
    9. Eliaz, Kfir & Forges, Françoise, 2015. "Information disclosure to Cournot duopolists," Economics Letters, Elsevier, vol. 126(C), pages 167-170.
    10. Giebe, Thomas, 2014. "Innovation contests with entry auction," Journal of Mathematical Economics, Elsevier, vol. 55(C), pages 165-176.
    11. Ori Haimanko, 2021. "Bayesian Nash equilibrium existence in (almost continuous) contests," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 71(3), pages 1231-1258, April.
    12. Einy, E. & Haimanko, O. & Moreno, D. & Sela, A. & Shitovitz, B., 2015. "Equilibrium existence in Tullock contests with incomplete information," Journal of Mathematical Economics, Elsevier, vol. 61(C), pages 241-245.

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    More about this item

    Keywords

    Tullock contests;

    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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