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On Coalition Formation with Heterogeneous Agents

Author

Listed:
  • Alejandro Caparrós

    (Department of Economics, Institute of Economics and Geography (IEG), Spanish Council for Scientific Research (CSIC))

  • Abdelhakim Hammoudi

    (Université Panthéon - Assas, ERMES, CNRS)

  • Tarik Tazdaït

    (CNRS, EHESS, CIRED)

Abstract

We propose a framework to analyze coalition formation with heterogeneous agents. Existing literature defines stability conditions that do not ensure that, once an agent decides to sign an agreement, the enlarged coalition is feasible. Defining the concepts of refraction and exchanging, we set up conditions of existence and enlargement of a coalition with heterogeneous agents. We use the concept of exchanging agents to give necessary conditions for internal stability and show that refraction is a sufficient condition for the failure of an enlargement of the coalition. With heterogeneous agents we can get a situation where a group of members of an unstable coalition does not deviate, neither within the coalition nor within the extended coalition. Hence, the possibilities of agreement are richer than in the standard analysis with homogeneous agents. Examples of industrial economics are used for illustration, and an application to climate change negotiations is discussed in more detail.

Suggested Citation

  • Alejandro Caparrós & Abdelhakim Hammoudi & Tarik Tazdaït, 2004. "On Coalition Formation with Heterogeneous Agents," Working Papers 2004.70, Fondazione Eni Enrico Mattei.
    • Handle: RePEc:fem:femwpa:2004.70
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    References listed on IDEAS

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    Keywords

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    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D74 - Microeconomics - - Analysis of Collective Decision-Making - - - Conflict; Conflict Resolution; Alliances; Revolutions
    • Q28 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Government Policy

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