Largest Consistent Set in International Environmental Agreements

Giovanni Villani () and Marta Biancardi

Quaderni DSEMS from Dipartimento di Scienze Economiche, Matematiche e Statistiche, Universita' di Foggia

Abstract: In this paper we study the formation and the stability of International Environmental Agreements (IEAs) in a pollution abatement model with a quadratic cost function. Countries play a two-stage game: in the first stage each country decides to join or not the coalition while, in the -second stage, the quantity of pollution abatement is chosen. To analyze the stability of coalition structures in a multiple coalition game, we use the notion of the Largest Consistent Set (LCS) which allows players to be farsighted.In an abstract context, Chwe (1994) developed the concept of farsighted stability: an outcome is stable and it is in the LCS if and only if deviations from it or potential further deviations are not unanimously preferred to the original outcome by the coalition considering the deviations. Applying this notion of stability in the IEA context we assume that, when a country or a sub-coalition contemplate exiting or joining an agreement, it takes into account the reactions of other countries ignited by its own actions. We identify what would be the resulting stable structures and the LCS, examining the indicator of countries’ environmental awareness proposed by the model. A particular analysis is proposed about the Grand Coalition. Moreover, we present a handy Maple algorithm to compare the cost functions and to determine direct dominance.

Keywords: IEA; Farsightedness; Implementation. (search for similar items in EconPapers)
JEL-codes: C60 F50 (search for similar items in EconPapers)
Date: 2011-04
New Economics Papers: this item is included in nep-ene, nep-env and nep-gth
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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