PhilSci Archive

Group Communication and the Transformation of Judgments: An Impossibility Result

List, Christian (2008) Group Communication and the Transformation of Judgments: An Impossibility Result. [Preprint]

[img]
Preview
PDF
Download (195Kb) | Preview

    Abstract

    While a large social-choice-theoretic literature discusses the aggregation of individual judgments into collective ones, there is much less formal work on the transformation of judgments in group communication. I develop a model of judgment transformation and prove a baseline impossibility theorem: Any judgment transformation function satisfying some initially plausible conditions is the identity function, under which no opinion change occurs. I identify escape routes from this impossibility and argue that the kind of group communication envisaged by deliberative democats must be "holistic": It must focus on webs of connected propositions, not on one proposition at a time, which echoes the Duhem-Quine "holism thesis" on scientific theory testing. My approach provides a map of the logical space in which different possible group communication processes are located.


    Export/Citation:EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL
    Social Networking:

    Item Type: Preprint
    Keywords: communication, group deliberation, judgment aggregation, impossibility theorem, belief revision, opinion change
    Subjects: General Issues > Decision Theory
    General Issues > Ethical Issues
    General Issues > Theory Change
    Specific Sciences > Economics
    Depositing User: Christian List
    Date Deposited: 11 Nov 2008
    Last Modified: 07 Oct 2010 11:17
    Item ID: 4320
    URI: http://philsci-archive.pitt.edu/id/eprint/4320

    Actions (login required)

    View Item

    Document Downloads