Top monotonicity : a common root for single peakedness, single crossing and the median voter result
Barberà, Salvador 1946- (Universitat Autònoma de Barcelona)
Moreno, Bernardo (Universidad de Málaga)

Publicació:	Barcelona Barcelona School of Economics, 2010
Descripció:	31 pàg.
Resum:	When members of a voting body exhibit single peaked preferences, pair-wise majority voting equilibria (Condorcet winners) always exist. Moreover, they coincide with the median(s) of the voters' most preferred alternatives. This important fact is known as the median voter result. Variants of it also apply when single-peakedness fails, but preferences verify other domain restrictions, such as single-crossing, intermediateness or order restriction. Austen-Smith and Banks (1999) also proved that the result holds under single-peakedness, for a wide class of voting rules that includes the majority rule as a special case, and conveniently redefined versions of a median. We extend and unify previous results. We propose a new domain condition, called top monotonicity, which encompasses all previous domains restrictions, allows for new ones and preserves a version of the median voter result for a large class of voting rules. We also show that top monotonicity arises in interesting economic environments.
Ajuts:	Ministerio de Ciencia e Innovación ECO2008-04756 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-0419
Nota:	A coberta: Graduate School of Economics
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Llengua:	Anglès
Col·lecció:	BSE working paper ; 297
Document:	Working paper ; recerca ; Versió publicada
Matèria:	Majority (Condorcet) winners ; Single crossing and intermediate preferences ; Single peaked
Publicat a:	BSE Barcelona School of Economics Working Papers, 2010

Adreça alternativa: https://bse.eu/research/working-papers/top-monotonicity-common-root-single-peakedness-single-crossing-and-median

31 p, 366.1 KB

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