List, Christian (2007) Group deliberation and the transformation of judgments: an impossibility result. PEPP, 26. Suntory and Toyota International Centres for Economics and Related Disciplines, London School of Economics and Political Science, London, UK.
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While a large social-choice-theoretic literature discusses the aggregation of individual judgments into collective ones, there is relatively little formal work on the transformation of individual judgments in group deliberation. I develop a model of judgment transformation and prove a baseline impossibility result: Any judgment transformation function satisfying some initially plausible condition is the identity function, under which no opinion change occurs. I identify escape routes from this impossibility result and argue that successful group deliberation must be ‘holistic’: individuals cannot generally revise their judgments on a proposition based on judgments on that proposition alone but must take other propositions into account too. I discuss the significance of these findings for democratic theory.
|Item Type:||Monograph (Discussion Paper)|
|Additional Information:||© 2007 Christian List|
|Uncontrolled Keywords:||group deliberation, judgment aggregation, judgment transformation, belief revision|
|Library of Congress subject classification:||H Social Sciences > HV Social pathology. Social and public welfare. Criminology|
|Journal of Economic Literature Classification System:||D - Microeconomics > D7 - Analysis of Collective Decision-Making > D70 - General
D - Microeconomics > D7 - Analysis of Collective Decision-Making > D71 - Social Choice; Clubs; Committees; Associations
|Sets:||Departments > Government
Collections > Economists Online
Research centres and groups > Centre for Philosophy of Natural and Social Science (CPNSS)
Research centres and groups > Suntory and Toyota International Centres for Economics and Related Disciplines (STICERD)
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