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Independent social choice correspondences
Authors:Donald E Campbell  Jerry S Kelly
Institution:(1) Dept. of Economics, The College of William and Mary, 23187-8795 Williamsburg, VA, USA;(2) Dept. of Economics, Syracuse University, 13244-1090 Syracuse, NY, USA
Abstract:A fixed agenda social choice correspondence PHgr on outcome set X maps each profile of individual preferences into a nonempty subset of X. If PHgr satisfies an analogue of Arrow's independence of irrelevant alternatives condition, then either the range of PHgr contains exactly two alternatives, or else there is at most one individual whose preferences have any bearing on PHgr. This is the case even if PHgr is not defined for any proper subset of X.
Keywords:Fixed agenda  independence  social choice
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