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“Aggregating judgments by the majority method”

Author

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  • García-Bermejo, Juan Carlos

    (Departamento de Análisis Económico (Teoría e Historia Económica). Universidad Autónoma de Madrid.)

Abstract

“Judgement aggregation has been receiving increasing attention over recent years. Some typical impossibility results have been proved, about majority and other similar aggregation methods. Those results depend essentially on certain logical constraints borrowed from standard two- valued deductive logic. Nevertheless, the adequacy of these constraints is doubtful. In this paper, we show that by weakening the consistency conditions in a plausible way, such impossibility theorems can be reversed. We also show that the formalism habitually employed in social choice theory may convey a richer setting for analysing this sort of aggregation.”

Suggested Citation

  • García-Bermejo, Juan Carlos, 2006. "“Aggregating judgments by the majority method”," Working Papers in Economic Theory 2006/10, Universidad Autónoma de Madrid (Spain), Department of Economic Analysis (Economic Theory and Economic History).
    • Handle: RePEc:uam:wpaper:200610
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    File URL: http://www.uam.es/departamentos/economicas/analecon/especifica/mimeo/wp200610.pdf
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    More about this item

    Keywords

    Judgement aggregation; majority method; logical constraints on judgment aggregation; discursive dilemma;
    All these keywords.

    JEL classification:

    • D7 - Microeconomics - - Analysis of Collective Decision-Making
    • D70 - Microeconomics - - Analysis of Collective Decision-Making - - - General
    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations

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