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How to choose a non-controversial list with k names

Salvador Barberà () and Danilo Coelho ()

UFAE and IAE Working Papers from Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC)

Abstract: Barberà and Coelho (2006) documented six screening rules associated with the rule of k names that are used by different institutions around the world. Here, we study whether these screening rules satisfy stability. A set is said to be a weak Condorcet set la Gehrlein (1985) if no candidate in this set can be defeated by any candidate from outside the set on the basis of simple majority rule. We say that a screening rule is stable if it always selects a weak Condorcet set whenever such set exists. We show that all of the six procedures which are used in reality do violate stability if the voters act not strategically. We then show that there are screening rules which satisfy stability. Finally, we provide two results that can explain the widespread use of unstable screening rules.

Keywords: NULL (search for similar items in EconPapers)
Pages: 24
Date: 2006-10-27
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Journal Article: How to choose a non-controversial list with k names (2008) Downloads
Working Paper: How to choose a non-controversial list with k names (2006) Downloads
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