The possibility of judgment aggregation on agendas with subjunctive implications
نویسندگان
چکیده
منابع مشابه
The possibility of judgment aggregation on agendas with subjunctive implications
The new eld of judgment aggregation aims to nd collective judgments on logically interconnected propositions. Recent impossibility results establish limitations on the possibility to vote independently on the propositions. I show that, fortunately, the impossibility results do not apply to a wide class of realistic agendas once propositions like if a then b are adequately modelled, namely a...
متن کاملThe possibility of judgment aggregation under subjunctive implications
The new eld of judgment aggregation aims to nd group judgments on logically interconnected propositions. Recent impossibility results have established limitations on the possibility to vote independently on the propositions, hence notably on the possibility to use quota rules (rules with acceptance thresholds for the propositions). I show that, fortunately, the impossibilities fail to apply t...
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A general model of judgment aggregation is presented in which judgments on propositions are not binary but come in degrees. The primitives of the model are a set of propositions, an entailment relation, and a “triangular norm” which establishes a lower bound on the degree to which a proposition is true whenever it is entailed by a set of propositions. For an important class of agendas, we ident...
متن کاملJudgment aggregation: (im)possibility theorems
The aggregation of individual judgments over interrelated propositions is a newly arising eld of social choice theory. I introduce several independence conditions on judgment aggregation rules, each of which protects against a speci c type of manipulation by agenda setters or voters. I derive impossibility theorems whereby these independence conditions are incompatible with certain minimal req...
متن کاملMany-valued judgment aggregation: Characterizing the possibility/impossibility boundary
A general model of judgment aggregation is presented in which judgments on propositions are not binary but come in degrees. The primitives of the model are a set of propositions, an entailment relation, and a “triangular norm” which establishes a lower bound on the degree to which a proposition is true whenever it is entailed by a set of propositions. Under standard assumptions, we identify a n...
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ژورنال
عنوان ژورنال: Journal of Economic Theory
سال: 2010
ISSN: 0022-0531
DOI: 10.1016/j.jet.2007.11.003