Dictatorship versus manipulability

Dezső Bednay (), Anna Moskalenko and Attila Tasnádi

Working Papers from Universitat Rovira i Virgili, Department of Economics

Abstract: The Gibbard–Satterthwaite (1973/75) theorem roughly states that we have to accept dictatorship or manipulability in case of at least three alternatives. A large strand of the literature estimates the degree of manipulability of social choice functions (e.g. Aleskerov and Kurbanov, 1999, Favardin et al., 2002, and Aleskerov et al., 2012), most of them employing the Nitzan-Kelly index of manipulability. We take a different approach and introduce a non-dictatorship index based on our recent work (Bednay et al., 2017), where we have analysed social choice functions based on their distances to the dictatorial rules. By employing computer simulations, we investigate the relationship between the manipulability and nondictatorship indices of some prominent social choice functions, putting them into a common framework. Keywords: Voting rules, dictatorship, manipulability, manipulability index, dictatorship index. JEL Classification Number: D71.

Keywords: Elecció social; 33 - Economia (search for similar items in EconPapers)
Date: 2018
New Economics Papers: this item is included in nep-mic
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http://hdl.handle.net/2072/351579

Related works:
Journal Article: Dictatorship versus manipulability (2019)
Working Paper: Dictatorship versus manipulability (2018)
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