Franz Dietrich
‘Economics & Philosophy’
Judgment Aggregation Theory
In collaboration with Christian List, I study how a collective can form judgments on interconnected propositions, based on the judgments of its members. For instance, how can an expert panel assess whether global warming is accelerating, whether an acceleration would increase worldwide inequality, and whether inequality reduction should be a policy goal? Collective judgments should be at the same time logically coherent and democratically responsive to individual judgments — a double objective that is hard to meet. The question of the right procedure is wide open. Judgment aggregation has many applications and attracts interest from various disciplines, such as economics, philosophy, political science, jurisprudence, artificial intelligence, and logic.
Related Work
- Judgment Aggregation (with C. List), book under review at Cambridge University Press
- Dynamically rational judgment aggregation (with C. List), Social Choice and Welfare, 2024
- Categorical versus graded beliefs, Frontiers in Psychology 18: 817940, 2022
- The relation between degrees of belief and binary beliefs: a general impossibility theorem (with C. List). In: I. Douven (ed.) Lotteries, Knowledge, and Rational Belief. Essays on the Lottery Paradox, Cambridge University Press, 2021, pp. 223-54 [preprint]
- From degrees of belief to binary beliefs: Lessons from judgment-aggregation theory (with C. List), Journal of Philosophy 115: 225-270, 2018 [preprint]
- Introduction to the special issue 'Beliefs in Groups' of Theory and Decision (with W. Rabinowicz), Theory and Decision 85: 1-4, 2018 [preprint]
- Probabilistic opinion pooling generalized. Part one: general agendas (with C. List), Social Choice and Welfare 48: 747-786, 2017
- Probabilistic opinion pooling generalized. Part two: the premise-based approach (with C. List), Social Choice and Welfare 48: 787-814, 2017
- Judgment aggregation and agenda manipulation, Games and Economic Behavior 95: 113-36, 2016 [preprint]
- Aggregation theory and the relevance of some issues to others, Journal of Economic Theory 160: 463-493, 2015 [preprint]
- For a few additional results see the 2006 version (Meteor Research Memorandum RM/07/002, Maastricht University, 2007)
- Aggregating causal judgments (with R. Bradley and C. List), Philosophy of Science 81(4): 491-515, 2014 [preprint]
- Judgment aggregation in search for the truth (with I. Bozbay and H. Peters), Games and Economic Behavior 87: 571-590, 2014 [preprint]
- Scoring rules for judgment aggregation, Social Choice and Welfare 42(4): 873-911, 2014
- Judgment aggregation and the discursive dilemma, in: Encyclopedia of Philosophy and the Social Sciences, edited by Byron Kaldis, SAGE Publishing, 2013
- Propositionwise judgment aggregation: the general case (with C. List), Social Choice and Welfare 40: 1067-1095, 2013
- Towards a unified theory of aggregation (with C. List), Social Choice and Welfare Prize Lecture, SCW Meeting, 2010
- The possibility of judgment aggregation on agendas with subjunctive implications, Journal of Economic Theory 145(2): 603-638, 2010 [preprint]
- The aggregation of propositional attitudes: towards a general theory (with C. List), Oxford Studies in Epistemology 3: 215-234, 2010 [Corrigendum]
- Majority voting on restricted domains (with C. List), Journal of Economic Theory 145(2): 512-543, 2010 [preprint]
- Un bilan interprétatif de la théorie de l'agrégation logique (with P. Mongin as first author), Revue d'Economie Politique 120: 929-72, 2010 [preprint]
- The premise-based approach to judgment aggregation (with P. Mongin), Journal of Economic Theory 145(2): 562-582, 2010
[preprint]
- an earlier version which results about infinite populations
- The impossibility of unbiased judgment aggregation (with C. List), Theory and Decision 68: 281-299, 2010 [preprint]
- The problem of constrained judgment aggregation (with C. List), in: F. Stadler et al. (eds.), The Present Situation in the Philosophy of Science, Springer: Dordrecht, p. 125-139, 2009 [preprint]
- A liberal paradox for judgment aggregation (with C. List), Social Choice and Welfare 31(1): 59-78, 2008 [preprint]
- Judgment aggregation without full rationality (with C. List), Social Choice and Welfare 31(1): 15-39, 2008 [preprint]
- Judgment aggregation under constraints (with C. List), in Economics, Rational Choice and Normative Philosophy, T. Boylan and R. Gekker (eds.), London (Routledge), 2008 [preprint]
- Strategy-proof judgment aggregation (with C. List), Economics and Philosophy 23: 269-300, 2007 [preprint]
- Judgment aggregation by quota rules: majority voting generalized (with C. List), Journal of Theoretical Politics 19(4): 391-424, 2007 [preprint]
- Arrow's theorem in judgment aggregation (with C. List), Social Choice and Welfare 29(1): 19-33, 2007 [preprint]
- A generalised model of judgment aggregation (earlier title: "Judgment aggregation in general logics"), Social Choice and Welfare 28(4): 529-565, 2007 [preprint]
- Judgment aggregation: (im)possibility theorems, Journal of Economic Theory 126(1): 286-298, 2006 [preprint]
- Judgment aggregation without full rationality: a summary (with C. List), Proceedings of the 1st International Workshop on Computational Social Choice (COMSOC), Amsterdam, 2006, pp. 139-152
- Judgment aggregation with consistency alone (with C. List), unpublished, 2007