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Multilateral versus sequential negotiations over climate change

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  • Alejandro Caparrós
  • Jean-Christophe Péreau

Abstract

We discuss a model of gradual coalition formation with positive externalities in which a leading country endogenously decides whether to negotiate multilaterally or sequentially over climate change. We show that the leader may choose a sequential path, and that the choice is determined by the convexity of the TU-game and the free-rider payoffs of the followers. Except in a few clearly defined cases, the outcome of the negotiation process is always the grand coalition, although the process may need some time. This holds for the standard IEA game with heterogeneous players even if the grand coalition is not stable in a multilateral context. We also analyse the role of a facilitating agency. The agency has an incentive to speed up intra-stage negotiations and to extend the period between negotiation stages in a sequential process.

Suggested Citation

  • Alejandro Caparrós & Jean-Christophe Péreau, 2017. "Multilateral versus sequential negotiations over climate change," Oxford Economic Papers, Oxford University Press, vol. 69(2), pages 365-387.
    • Handle: RePEc:oup:oxecpp:v:69:y:2017:i:2:p:365-387.
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    File URL: http://hdl.handle.net/10.1093/oep/gpw075
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    JEL classification:

    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • H41 - Public Economics - - Publicly Provided Goods - - - Public Goods
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming

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