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How risky is it to manipulate a scoring rule under incomplete information?

Author

Listed:
  • Christian Klamler

    (University of Graz)

Abstract

This paper is concerned with the manipulability of common voting rules, in particular with the Borda rule and other scoring rules. It is shown that, if one deviates from the assumption of complete information of the voters about the preference profile in the slightest possible manner, the Borda rule may "punish" a manipulator in the sense that the manipulation might lead to a worse outcome for the manipulator than had she told the truth. Voting rules showing this kind of behavior can be considered to be more manipulation resistant than other voting rules especially if we think about sufficiently risk averse voters.

Suggested Citation

  • Christian Klamler, 2014. "How risky is it to manipulate a scoring rule under incomplete information?," Economics Bulletin, AccessEcon, vol. 34(2), pages 1214-1221.
    • Handle: RePEc:ebl:ecbull:eb-14-00486
    as

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    File URL: http://www.accessecon.com/Pubs/EB/2014/Volume34/EB-14-V34-I2-P112.pdf
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    References listed on IDEAS

    as
    1. Donald Campbell & Jerry Kelly, 2010. "Losses due to manipulation of social choice rules," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 45(3), pages 453-467, December.
    2. Prasanta K. Pattanaik & Yongsheng Xu & Walter Bossert, 2000. "Choice under complete uncertainty: axiomatic characterizations of some decision rules," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 16(2), pages 295-312.
    3. Barbera, Salvador & Dutta, Bhaskar & Sen, Arunava, 2005. "Corrigendum to "Strategy-proof social choice correspondences" [J. Econ. Theory 101 (2001) 374-394]," Journal of Economic Theory, Elsevier, vol. 120(2), pages 275-275, February.
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    More about this item

    Keywords

    Borda rule; manipulability; incomplete information;
    All these keywords.

    JEL classification:

    • D7 - Microeconomics - - Analysis of Collective Decision-Making

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