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Super-Majorites, One-Dimensional Policies, and Social Surplus




In the setting of a one-dimensional legislative bargaining game, we characterize qualified majority rules maximizing social surplus, that is, the sum of individual benefits. The simple majority rule maximizes social surplus when individual utilities are tent-shaped. When the utilities are strictly concave, the surplus maximizing rule is a strict supermajority.

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  • Daniel Cardona & Clara Ponsatí, 2014. "Super-Majorites, One-Dimensional Policies, and Social Surplus," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 16(6), pages 884-898, December.
  • Handle: RePEc:bla:jpbect:v:16:y:2014:i:6:p:884-898

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    References listed on IDEAS

    1. repec:cup:apsrev:v:83:y:1989:i:04:p:1181-1206_08 is not listed on IDEAS
    2. Banks, Jeffrey S. & Duggan, John, 2006. "A General Bargaining Model of Legislative Policy-making," Quarterly Journal of Political Science, now publishers, vol. 1(1), pages 49-85, January.
    3. Predtetchinski, Arkadi, 2011. "One-dimensional bargaining," Games and Economic Behavior, Elsevier, vol. 72(2), pages 526-543, June.
    4. Cardona, Daniel & Ponsati, Clara, 2007. "Bargaining one-dimensional social choices," Journal of Economic Theory, Elsevier, vol. 137(1), pages 627-651, November.
    5. Cho, Seok-ju & Duggan, John, 2003. "Uniqueness of stationary equilibria in a one-dimensional model of bargaining," Journal of Economic Theory, Elsevier, vol. 113(1), pages 118-130, November.
    6. Cardona, Daniel & Ponsati, Clara, 2011. "Uniqueness of stationary equilibria in bargaining one-dimensional policies under (super) majority rules," Games and Economic Behavior, Elsevier, vol. 73(1), pages 65-75, September.
    7. Banks, Jeffrey s. & Duggan, John, 2000. "A Bargaining Model of Collective Choice," American Political Science Review, Cambridge University Press, vol. 94(01), pages 73-88, March.
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    Cited by:

    1. Daniel Cardona & Antoni Rubí-Barceló, 2014. "On the efficiency of equilibria in a legislative bargaining model with particularistic and collective goods," Public Choice, Springer, vol. 161(3), pages 345-366, December.
    2. Daniel Cardona & Clara Ponsatí, 2013. "Super-majorites and collective surplus in one-dimensional bargaining: Numerical simulations," Economics Bulletin, AccessEcon, vol. 33(1), pages 278-288.

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