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Maximal domain for strategy-proof probabilistic rules in economies with one public good

  • Shuhei Morimoto


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    We consider the problem of choosing a level of a public good on an interval of the real line among a group of agents. A probabilistic rule chooses a probability distribution over the interval for each preference profile. We investigate strategy-proof probabilistic rules in the case where distributions are compared based on stochastic dominance relations. First, on a “minimally rich domain”, we characterize the so-called probabilistic generalized median rules (Ehlers et al., J Econ Theory 105:408–434, 2002 ) by means of stochastic-dominance (sd) strategy-proofness and ontoness. Next, we study how much we can enlarge a domain to allow for the existence of sd-strategy-proof probabilistic rules that satisfy ontoness and the no-vetoer condition. We establish that the domain of “convex” preferences is the unique maximal domain including a minimally rich domain for these properties. Copyright Springer-Verlag Berlin Heidelberg 2013

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    Article provided by Springer in its journal Social Choice and Welfare.

    Volume (Year): 41 (2013)
    Issue (Month): 3 (September)
    Pages: 637-669

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    Handle: RePEc:spr:sochwe:v:41:y:2013:i:3:p:637-669
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    1. H. Moulin, 1980. "On strategy-proofness and single peakedness," Public Choice, Springer, vol. 35(4), pages 437-455, January.
    2. Gibbard, Allan, 1977. "Manipulation of Schemes That Mix Voting with Chance," Econometrica, Econometric Society, vol. 45(3), pages 665-81, April.
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    7. Ehlers, Lars & Peters, Hans & Storcken, Ton, 2002. "Strategy-Proof Probabilistic Decision Schemes for One-Dimensional Single-Peaked Preferences," Journal of Economic Theory, Elsevier, vol. 105(2), pages 408-434, August.
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    10. Barbera, Salvador, 1979. "A Note on Group Strategy-Proof Decision Schemes," Econometrica, Econometric Society, vol. 47(3), pages 637-40, May.
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    12. Hideyuki Mizobuchi & Shigehiro Serizawa, 2005. "Maximal Domain for Strategy-Proof Rules in Allotment Economies," ISER Discussion Paper 0628, Institute of Social and Economic Research, Osaka University.
    13. Kentaro Hatsumi & Dolors Berga & Shigehiro Serizawa, 2011. "A maximal domain for strategy-proof and no-vetoer rules in the multi-object choice model," ISER Discussion Paper 0809, Institute of Social and Economic Research, Osaka University, revised Feb 2013.
    14. Jordi Massó & Inés Moreno de Barreda, 2010. "On Strategy-proofness and Symmetric Single-peakedness," UFAE and IAE Working Papers 809.10, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
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