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Categorical versus graded beliefs

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Abstract

This essay discusses the difficulty to reconcile two paradigms about beliefs: the binary or categorical paradigm of yes/no beliefs and the probabilistic paradigm of degrees of belief. The possibility for someone to hold beliefs of both types simultaneously is challenged by the lottery paradox, and more recently by a general impossibility theorem. The nature, relevance, and implications of the tension are explained and assessed. A more technical elaboration can be found in Dietrich and List (2018, 2021)

Suggested Citation

  • Franz Dietrich, 2021. "Categorical versus graded beliefs," Documents de travail du Centre d'Economie de la Sorbonne 21032r, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne, revised Feb 2022.
    • Handle: RePEc:mse:cesdoc:21032r
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    File URL: https://halshs.archives-ouvertes.fr/halshs-03500542
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    References listed on IDEAS

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    1. Franz Dietrich & Christian List, 2018. "From degrees of belief to binary beliefs: Lessons from judgment-aggregation theory," PSE-Ecole d'économie de Paris (Postprint) halshs-01744085, HAL.
    2. Douven, Igor & Romeijn, Jan-Willem, 2007. "The Discursive Dilemma As A Lottery Paradox," Economics and Philosophy, Cambridge University Press, vol. 23(3), pages 301-319, November.
    3. Franz Dietrich & Christian List, 2019. "The relation between degrees of belief and binary beliefs: A general impossibility theorem," Documents de travail du Centre d'Economie de la Sorbonne 19001, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
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    1. Franz Dietrich & Christian List, 2019. "The relation between degrees of belief and binary beliefs: A general impossibility theorem," Documents de travail du Centre d'Economie de la Sorbonne 19001, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    2. Franz Dietrich & Christian List, 2019. "The relation between degrees of belief and binary beliefs: A general impossibility theorem," Documents de travail du Centre d'Economie de la Sorbonne 19001, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    3. Dietrich, Franz & List, Christian, 2014. "From degrees of belief to beliefs: Lessons from judgment-aggregation theory," MPRA Paper 58257, University Library of Munich, Germany.

    More about this item

    Keywords

    logic vs. rational choice theory; yes/no belief vs. subjective probabilities; lottery paradox; general impossibility theorem;
    All these keywords.

    JEL classification:

    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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