Judgment aggregation with consistency alone

Maastricht University (2007)

Authors
Christian List
London School of Economics
Franz Dietrich
Centre National de la Recherche Scientifique
Abstract
All existing impossibility theorems on judgment aggregation require individual and collective judgment sets to be consistent and complete, arguably a demanding rationality requirement. They do not carry over to aggregation functions mapping profiles of consistent individual judgment sets to consistent collective ones. We prove that, whenever the agenda of propositions under consideration exhibits mild interconnections, any such aggregation function that is "neutral" between the acceptance and rejection of each proposition is dictatorial. We relate this theorem to the literature.
Keywords Judgment aggregation  Consistency
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References found in this work BETA

Arrow's Theorem in Judgment Aggregation.Franz Dietrich & Christian List - 2007 - Social Choice and Welfare 29 (1):19-33.
Deliberative Democracy and the Discursive Dilemma.Philip Pettit - 2001 - Philosophical Issues 11 (1):268-299.
Logical Constraints on Judgement Aggregation.Marc Pauly & Martin van Hees - 2006 - Journal of Philosophical Logic 35 (6):569 - 585.

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Citations of this work BETA

Judgment Aggregation: A Survey.Christian List & Clemens Puppe - 2009 - In Christian List & Clemens Puppe (eds.), Handbook of Rational and Social Choice. Oxford University Press.
Majority Voting on Restricted Domains.Franz Dietrich & Christian List - 2010 - Journal of Economic Theory 145 (2):512-543.
Propositionwise Judgment Aggregation: The General Case.Franz Dietrich & Christian List - 2013 - Social Choice and Welfare 40 (4):1067-1095.
Introduction to Judgment Aggregation.Christian List & Ben Polak - 2010 - Journal of Economic Theory 145 (2):441-466.

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