We derive necessary and sufficient conditions in order for a finite number of binary voting choices to be consistent with the hypothesis that voters have preferences that admit concave utility representations. When the location of the voting alternatives is known, we apply these conditions in order to derive simple, nontrivial testable restrictions on the location of voters’ ideal points, and in order to predict individual voting behavior. If, on the other hand, the location of voting alternatives is unrestricted then voting decisions impose no testable restrictions on the joint location of voter ideal points, even if the space of alternatives is one dimensional. Furthermore, two dimensions are always sufficient to represent or fold the voting records of any number of voters while endowing all these voters with strictly concave preferences and arbitrary ideal points. The analysis readily generalizes to choice situations over any finite sets of alternatives.
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Paper provided by University of Rochester - Wallis Institute of Political Economy in its series Wallis Working Papers with number
WP51.
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James C. Cox & Daniel Friedman & Vjollca Sadiraj, .
"Revealed Altruism,"
Experimental Economics Center Working Paper Series
2006-09, Experimental Economics Center, Andrew Young School of Policy Studies, Georgia State University, revised Jul 2007.
[Downloadable!]
Other versions:
Jim C. Cox & Daniel Friedman & Vjollca Sadiraj, 2005.
"Revealed Altruism,"
Levine's Bibliography
784828000000000595, UCLA Department of Economics.
[Downloadable!]
James C. Cox & Daniel Friedman & Vjollca Sadiraj, 2008.
"Revealed Altruism,"
Econometrica,
Econometric Society, vol. 76(1), pages 31-69, 01.
[Downloadable!] (restricted)
Arianna Degan & Antonio Merlo, 2006.
"Do Voters Vote Sincerely?,"
PIER Working Paper Archive
06-008, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania.
[Downloadable!]