Judgment aggregation is a mathematical theory of collective decision-making. It concerns
the methods whereby individual opinions about logically interconnected issues of interest …

Group judgments are often influenced by their members' individual expertise. It is less clear,
though, how individual expertise should affect the group judgments. This paper surveys a …

This paper introduces a new class of judgment aggregation rules, to be called 'scoring rules'
after their famous counterparts in preference aggregation theory. A scoring rule generates …

We adopt an 'epistemic'interpretation of social decisions: there is an objectively correct
choice, each voter receives a 'noisy signal'of the correct choice, and the social objective is to …

Descartes once argued that, with sufficient effort and skill, a single scientist could uncover
fundamental truths about our world. Contemporary science proves the limits of this claim …

Issues related to collective decision making and to Condorcet jury theorems have been
studied and publicly discussed for over two hundred years. Recently, there is a burgeoning …

Judgment aggregation theory, or rather, as we conceive of it here, logical aggregation theory
generalizes social choice theory by having the aggregation rule bear on judgments of all …

Judgment aggregation studies how collective opinions arise from the aggregation of
individual ones. This article surveys a variety of aggregation rules (possible ways of …

The aggregation of consistent individual judgments on logically interconnected propositions
into a collective judgment on those propositions has recently drawn much attention …

I propose a relevance-based independence axiom on how to aggregate individual yes/no
judgments on given propositions into collective judgments: the collective judgment on a …