The problem of constrained judgment aggregation

In Friedrich Stadler (ed.), The Present Situation in the Philosophy of Science. Dordrecht, Netherlands: Springer. pp. 125-139 (2009)
Download Edit this record How to cite View on PhilPapers
Abstract
Group decisions must often obey exogenous constraints. While in a preference aggregation problem constraints are modelled by restricting the set of feasible alternatives, this paper discusses the modelling of constraints when aggregating individual yes/no judgments on interconnected propositions. For example, court judgments in breach-of-contract cases should respect the constraint that action and obligation are necessary and sufficient for liability, and judgments on budget items should respect budgetary constraints. In this paper, we make constraints in judgment aggregation explicit by relativizing the rationality conditions of consistency and deductive closure to a constraint set, whose variation yields more or less strong notions of rationality. This approach of modelling constraints explicitly contrasts with that of building constraints as axioms into the logic, which turns compliance with constraints into a matter of logical consistency and thereby conflates requirements of ordinary logical consistency and requirements dictated by the environment . We present some general impossibility results on constrained judgment aggregation; they are immediate corollaries of known results on judgment aggregation.
Reprint years
2009, 2010
PhilPapers/Archive ID
LISTPO-15
Upload history
First archival date: 2020-04-18
Latest version: 2 (2020-04-21)
View other versions
Added to PP index
2010-09-23

Total views
105 ( #46,072 of 65,686 )

Recent downloads (6 months)
2 ( #65,564 of 65,686 )

How can I increase my downloads?

Downloads since first upload
This graph includes both downloads from PhilArchive and clicks on external links on PhilPapers.