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A laboratory study of Demand Reduction and Collusion in Uniform- and Discriminatory-Price Auctions

Author

Listed:
  • Alexander Elbittar

    () (Centro de Investigacion y Docencia Economica (CIDE))

  • Andrei Gomberg

    () (Centro de Investigacion Economica (CIE), Instituto Tecnologico Autonomo de Mexico (ITAM))

Abstract

We report results of an experimental study of multi-object uniform and discriminatory-price auctions in an environment of publicly known common values, concentrating on an environment where theory predicts sharply different results of the two auction formats. We find that the bidding behavior in the uniform case exhibits two clear regularities: agents consistently play weakly dominated strategies by overbidding on the first unit and have moderate difficulty coordinating on the high payoff (low auction revenue) equilibrium predicted by theory. However, subjects with experience in the same environment are better at reducing demand to achieve higher payoff. Bidders in discriminatory auctions, as predicted, tend to submit bids close to value for all units and are not generally successful in attempts at collusion.

Suggested Citation

  • Alexander Elbittar & Andrei Gomberg, 2008. "A laboratory study of Demand Reduction and Collusion in Uniform- and Discriminatory-Price Auctions," Working Papers 0801, Centro de Investigacion Economica, ITAM.
  • Handle: RePEc:cie:wpaper:0801
    as

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    File URL: http://ftp.itam.mx/pub/academico/inves/gomberg/08-01.pdf
    File Function: First version, 2008
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    References listed on IDEAS

    as
    1. Robert Wilson, 1979. "Auctions of Shares," The Quarterly Journal of Economics, Oxford University Press, vol. 93(4), pages 675-689.
    2. Lawrence M. Ausubel & Peter Cramton & Marek Pycia & Marzena Rostek & Marek Weretka, 2014. "Demand Reduction and Inefficiency in Multi-Unit Auctions," Review of Economic Studies, Oxford University Press, vol. 81(4), pages 1366-1400.
    3. Orly Sade & Charles Schnitzlein & Jaime F. Zender, 2006. "Competition and Cooperation in Divisible Good Auctions: An Experimental Examination," Review of Financial Studies, Society for Financial Studies, vol. 19(1), pages 195-235.
    4. Kagel, John H & Levin, Dan, 2001. "Behavior in Multi-unit Demand Auctions: Experiments with Uniform Price and Dynamic Vickrey Auctions," Econometrica, Econometric Society, vol. 69(2), pages 413-454, March.
    5. Goswami, Gautam & Noe, Thomas H & Rebello, Michael J, 1996. "Collusion in Uniform-Price Auctions: Experimental Evidence and Implications for Treasury Auctions," Review of Financial Studies, Society for Financial Studies, vol. 9(3), pages 757-785.
    6. Kagel, John H & Harstad, Ronald M & Levin, Dan, 1987. "Information Impact and Allocation Rules in Auctions with Affiliated Private Values: A Laboratory Study," Econometrica, Econometric Society, vol. 55(6), pages 1275-1304, November.
    7. Ronald Harstad, 2000. "Dominant Strategy Adoption and Bidders' Experience with Pricing Rules," Experimental Economics, Springer;Economic Science Association, vol. 3(3), pages 261-280, December.
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    Keywords

    Experimental economics; Second price auctions;

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