On 3–5 October, this three-day interdisciplinary workshop will addresses attitudes in various ways, ranging from philosophical to formal aspects, and from normative to empirical aspects.

An agent can hold attitudes of several kinds: beliefs, desires, preferences, intentions, and so on. This workshop addresses the nature, formation, and change of such attitudes, especially when they are held by individuals in a social context, or by a group as a whole. We wish to understand attitude change through deliberation, and group attitude formation through aggregation. At a positive level, how do attitudes form and change? At a normative level, what attitudes should be held rationally, and how should they be revised? The workshop is open to philosophical and formal approaches. Philosophical aspects include the nature and rationality of attitudes, and the nature of deliberation, information, and awareness. Formal aspects include the study of rules for forming, revising, or aggregating attitudes.

This workshop is jointly organised by the French-German research project Collective Attitude Formation (ColAForm) and by the LSE Choice Group, based at the Centre for Philosophy of Natural and Social Science (CPNSS). The named organisers are Mikael Cozic and Franz Dietrich.

The workshop is free to attend but registration is required. Please email the organisers to register.


Preliminary programme

Day 1: Thursday 3 October

15:30–15:50 Welcome LAK G.01
15:50–16:40 Opening Talk

Christian List (LSE): “Degrees of Belief and Binary Beliefs” (with Franz Dietrich)

LAK 2.06
16:40–17:20 Paul Egré (CNRS): “Communicating Approximate Quantities: a Bayesian Approach” (joint work with A. Mortier, B. Spector and S. Verheyen) LAK 2.06
17:20–18:00 Frederik Van De Putte (Ghent University), “Modal Operators for Non-normal Collective Attitudes” (joint work with Dominik Klein) LAK 2.06
18:00–18:40 Seamus Bradley (U. Leeds): “Belief models, aggregation and impossibility” LAK 2.06


Day 2: Friday 4 October

9:00–9:20 Arrival LAK 2.06
9:20–10:10 Opening Talk

Philippe Mongin (HEC & CNRS): “Stochastic Independence and Bayesian Decision Theory”

LAK 2.06
10:10–10:50 Chloé De-Canson (LSE): “Induction and the Priors” LAK 2.06
10:50–11:10 Coffee Break LAK G.01
11:10–11:50 Roberto Fumagalli (KCL): “Rationality, Preference Satisfaction and Degenerate Intentions: Why Rational Choice Theory is not Self-Defeating” LAK 2.06
11:50–12:30 Klaus Nehring (UC Davis): “Representation by Approval” LAK 2.06
12:30–14:00 Lunch Break LAK G.01
14:00–14:40 Jean Baccelli (U. Pittsburgh): “Interpersonal Comparisons of What?” LAK 2.06
14:40–15:20 Stéphane Zuber (Paris School of Economics & CNRS): “On the impossibility of consistent collective judgements under uncertainty” (joint work with M. Fleurbaey) LAK 2.06
15:20–15:50 Coffee Break LAK G.01
15:50–16:30 Federica Ceron (UPEC): “Aggregation of Bayesian Preferences: Unanimity vs. Monotonicity” (joint work with V. Vergopoulos) LAK 2.06
16:30–17:10 Dominik Klein (U. Bayreuth): “Expressive Voting and the Dynamics of Electoral Campaigns” (joint work with J. Marx) LAK 2.06
17:10–17:50 Soroush Rad (U. Bayreuth): “The tile is Probabilities on Belnap-Dunn Logic: forming belief from incomplete or conflicting information” (joint work with O. Roy) LAK 2.06
18:30 Pre-dinner drinks and conference dinner
The Old Bank of England (194 Fleet Street,


Day 3: Saturday 5 October

9:00–9:20 Arrival LAK 2.06
9:20–10:10 Opening Talk

Kai Spiekermann (LSE): “Epistemic Network Injustice”

LAK 2.06
10:10–10:50 Franz Dietrich (Paris School of Economics & CNRS): “Expected Value under Normative Uncertainty” (with Brian Jabarian) LAK 2.06
10:50–11:10 Coffee Break LAK 2.06
11:10–11:50 Nicholas Makins (LSE): “Attitudinal Ambivalence: normative uncertainty for non-cognitivists” LAK 2.06
11:50–12:30 Dmitry Ananyev (LSE): “Deriving Blameworthiness for Actions from Blameworthiness for Attitudes” LAK 2.06
12:30–14:00 Lunch Break LAK 2.06
14:00–14:40 Jan-Willem (U. Groningen): “Extremizing: the Rationality of Audacious Forecasting” LAK 2.06
14:40–15:20 Mikael Cozic (U. Paris-Est Créteil & IHPST): “Bayes-compatibility of testimonial update rules” (joint work with D. Bonnay) LAK 2.06
15:20–15:50 Coffee Break LAK 2.06
15:50–16:30 Rasmus K. Rendsvig (U. Copenhagen): “Converging on Common Knowledge” (joint work with D. Klein) LAK 2.06
16:30–17:10 Huihui Ding (U. Cergy): “Deliberation and epistemic democracy” (with Marcus Pivato) LAK 2.06



All talks take place in room 2.06 of the Lakatos Building, LSE.

For further help finding your way to LSE, see the LSE Maps and Directions website.



There are several options at reasonable prices, including Club Quarters (very close LSE), the Premier Inn (simple but safe), the Goodenough Club (within walking distance), and many budget options around Kings Cross (a little further north).



LSE offers convenient childcare services near campus. Visit the LSE Nursery Homepage for more information and to apply.



The workshop is supported by the CPNSS and the French and German national funding agencies ANR and DFG

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