Von Neumann-Morgenstern solution social choice functions: An impossibility theorem |
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Authors: | John A Ferejohn Richard D McKelvey |
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Institution: | California Institute of Technology, Division of Humanities and Social Sciences, Pasadena, California 91109, USA |
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Abstract: | Recent literature has made significant progress in characterizing those social choice functions that can arise, or be “implemented,” as the equilibria of an underlying noncooperative game. This paper studies the implementability of social choice functions via cooperative games. Specifically, we show that if a social choice function arises, in each environment, as a Von Neumann-Morgenstern solution of an underlying cooperative game, whose dominance structure is monotonic and neutral, then the social choice function is essentially oligarchic, in exactly the same sense that “core” selecting choice functions are oligarchic. |
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