Synthese 152 (2):285-298 (2006)

Authors
Gabriella Pigozzi
Université Paris Dauphine
Abstract
The aggregation of individual judgments on logically interconnected propositions into a collective decision on the same propositions is called judgment aggregation. Literature in social choice and political theory has claimed that judgment aggregation raises serious concerns. For example, consider a set of premises and a conclusion where the latter is logically equivalent to the former. When majority voting is applied to some propositions it may give a different outcome than majority voting applied to another set of propositions. This problem is known as the discursive dilemma. The discursive dilemma is a serious problem since it is not clear whether a collective outcome exists in these cases, and if it does, what it is like. Moreover, the two suggested escape-routes from the paradox --- the so-called premise-based procedure and the conclusion-based procedure --- are not, as I will show, satisfactory methods for group decision-making. In this paper I introduce a new aggregation procedure inspired by an operator defined in artificial intelligence in order to merge belief bases. The result is that we do not need to worry about paradoxical outcomes, since these arise only when inconsistent collective judgments are not ruled out from the set of possible solutions.
Keywords Philosophy   Philosophy of Language   Metaphysics   Epistemology   Logic   Philosophy
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DOI 10.1007/s11229-006-9063-7
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References found in this work BETA

Deliberative Democracy and the Discursive Dilemma.Philip Pettit - 2001 - Philosophical Issues 11 (1):268-299.
Arrow's Theorem in Judgment Aggregation.Franz Dietrich & Christian List - 2007 - Social Choice and Welfare 29 (1):19-33.

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Citations of this work BETA

Arrow's Theorem in Judgment Aggregation.Franz Dietrich & Christian List - 2007 - Social Choice and Welfare 29 (1):19-33.
Judgment Aggregation: A Survey.Christian List & Clemens Puppe - 2009 - In Christian List & Clemens Puppe (eds.), Handbook of Rational and Social Choice. Oxford University Press.
Strategy-Proof Judgment Aggregation.Franz Dietrich & Christian List - 2005 - Economics and Philosophy 23 (3):269-300.
Social Choice Theory.Christian List - 2013 - Stanford Encyclopedia of Philosophy.

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