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The information simplicity of scoring rules

Listed author(s):
  • Núñez Matias
  • Valleta Giacomo

    (METEOR)

Voters assign a score to each of the many available alternatives. We study the normativeproperties of procedures that aggregate the scores collected in the ballot box. A vast class ofaggregation procedures, including procedures based on the pairwise comparison of alternatives,satisfy May''s famous conditions in our framework. We prove that, within such a plethora ofprocedures, scoring rules are singled out by a property related to their informational simplicity:in order to determine the winner, they do not take into account the specific distribution ofscores chosen by each voter. The result is shown to hold regardless of the introduction ofasymmetry among the alternatives.

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File URL: http://digitalarchive.maastrichtuniversity.nl/fedora/objects/guid:98a8d4b6-27e4-4454-9f46-0ecc3b759da2/datastreams/ASSET1/content
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Paper provided by Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR) in its series Research Memorandum with number 011.

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Date of creation: 2012
Handle: RePEc:unm:umamet:2012011
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  11. Jose Apesteguia & Miguel A. Ballester & Rosa Ferrer, 2011. "On the Justice of Decision Rules," Review of Economic Studies, Oxford University Press, vol. 78(1), pages 1-16.
  12. J. Woeginger, Gerhard, 2003. "A new characterization of the majority rule," Economics Letters, Elsevier, vol. 81(1), pages 89-94, October.
  13. Satterthwaite, Mark Allen, 1975. "Strategy-proofness and Arrow's conditions: Existence and correspondence theorems for voting procedures and social welfare functions," Journal of Economic Theory, Elsevier, vol. 10(2), pages 187-217, April.
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  17. Pivato, Marcus, 2013. "Variable-population voting rules," Journal of Mathematical Economics, Elsevier, vol. 49(3), pages 210-221.
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