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On Strategy-proofness and Symmetric Single-Peakedness

Author

Listed:
  • Jordi Massé
  • Inés Moreno de Barreda

Abstract

We characterize the class of strategy-proof social choice functions on the domain of symmetric single-peaked preferences. This class is strictly larger than the set of generalized median voter schemes (the class of strategy-proof and tops-only social choice functions on the domain of single peaked preferences characterized by Moulin (1980)) since, under the domain of symmetric single-peaked preferences, generalized median voter schemes can be disturbed by discontinuity points and remain strategy-proof on the smaller domain. Our result identifies the specific nature of these discontinuities which allow to design non-onto social choice functions to deal with feasibility constraints.

Suggested Citation

  • Jordi Massé & Inés Moreno de Barreda, 2010. "On Strategy-proofness and Symmetric Single-Peakedness," Working Papers 421, Barcelona Graduate School of Economics.
  • Handle: RePEc:bge:wpaper:421
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    File URL: http://www.barcelonagse.eu/sites/default/files/working_paper_pdfs/421.pdf
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    References listed on IDEAS

    as
    1. Barberà, Salvador & Berga, Dolors & Moreno, Bernardo, 2010. "Individual versus group strategy-proofness: When do they coincide?," Journal of Economic Theory, Elsevier, vol. 145(5), pages 1648-1674, September.
    2. Barbera, S. & Masso, J. & Serizawa, S., 1998. "Strategy-Proof Voting on Compact Ranges," Games and Economic Behavior, Elsevier, vol. 25(2), pages 272-291, November.
    3. Berga, Dolors & Serizawa, Shigehiro, 2000. "Maximal Domain for Strategy-Proof Rules with One Public Good," Journal of Economic Theory, Elsevier, vol. 90(1), pages 39-61, January.
    4. Yves Sprumont, 1995. "Strategyproof Collective Choice in Economic and Political Environments," Canadian Journal of Economics, Canadian Economics Association, vol. 28(1), pages 68-107, February.
    5. H. Moulin, 1980. "On strategy-proofness and single peakedness," Public Choice, Springer, vol. 35(4), pages 437-455, January.
    6. Miguel Ballester & Guillaume Haeringer, 2011. "A characterization of the single-peaked domain," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 36(2), pages 305-322, February.
    Full references (including those not matched with items on IDEAS)

    More about this item

    Keywords

    strategy-proofness; Single-peaked preferences; Median Voter; Feasibility Constraints;

    JEL classification:

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

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