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<title><string language="fre"><![CDATA[Group Deliberation and the Revision of Individual Judgments: A Social-Choice-Theoretic Perspective]]></string></title>
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<string language="fre"><![CDATA[La sagesse collective : principes et mécanismes
Colloque des 22-23 mai 2008, organisé par l'Institut du Monde Contemporain du Collège de France, sous la direction du Professeur Jon Elster.
Intervention de Christian List.
While a large social-choice-theoretic literature discusses the aggregation of individual judgments into collective ones, there is relatively little formal work on the revision of individual judgments in group deliberation. I develop a model of judgment revision and prove a baseline impossibility result: any judgment revision function satisfying some initially plausible conditions is the identity function, under which no opinion change occurs. I identify escape routes from this impossibility and argue that successful group deliberation must be holistic.: it cannot generally be restricted to one proposition at a time but must focus on larger webs of interconnected propositions. This echoes the Duhem-Quine .holism thesis.on scienti.c theory testing.
My approach opens up a new way of analyzing deliberative processes axiomatically.]]></string></description>
<keyword><string language="fre"><![CDATA[comportement collectif]]></string></keyword><keyword><string language="fre"><![CDATA[démocratie]]></string></keyword><keyword><string language="fre"><![CDATA[rationalité]]></string></keyword><keyword><string language="fre"><![CDATA[sagesse]]></string></keyword><keyword><string language="fre"><![CDATA[prise de décision]]></string></keyword><keyword><string language="fre"><![CDATA[interaction sociale]]></string></keyword>
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NOTE:Christian List is Professor of Political Science and Philosophy at the London School of Economics. He received degrees in mathematics and philosophy (BA) and politics (MPhil and DPhil) from the University of Oxford and held research and visiting positions at Oxford (Nuffield College), the Australian National University (RSSS), Harvard University (CBRSS), MIT (Philosophy), the University of Konstanz (PPM Group) and Princeton University (Center for Human Values). He works in political theory, social choice theory and the philosophy of the social sciences. His current research focuses on judgment aggregation, group deliberation, democracy and group agency. His publications include "Aggregating Sets of Judgments: An Impossibility Result" (with P. Pettit, Economics &amp; Philosophy 2002); "Social Choice Theory and Deliberative Democracy: A Reconciliation" (with J. Dryzek, BJPS 2003); "The Discursive Dilemma and Public Reason" (Ethics 2006); "A Conditional Defense of Plurality Rule" (with R. E. Goodin, AJPS 2006) and "Arrow's theorem in judgment aggregation" (with F. Dietrich, Social Choice and Welfare 2007). Christian List is currently an editor of Economics and Philosophy. 
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