Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/130437
Authors: 
Ansink, Erik
Withagen, Cees A.
Year of Publication: 
2016
Series/Report no.: 
CESifo Working Paper 5802
Abstract: 
We augment the standard cartel formation game from non-cooperative coalition theory, often applied in the context of international environmental agreements on climate change, with the possibility that singletons support coalition formation without becoming coalition members themselves. Rather, their support takes the form of a monetary transfer to the coalition, which increases the members’ payoffs, and thereby provides an incentive for other singletons to join the coalition. We show that, under mild conditions on the costs and benefits of contributing to the public good (i.e. abatement of CO2 emissions), supporters exist in equilibrium. The existence of supporters increases the size of stable coalitions, increases abatement of CO2 emissions, and increases payoffs to each of four types of agents: members, joiners, free-riders, and supporters.
Subjects: 
coalition formation
public goods
support
transfers
international environmental agreements
JEL: 
C72
D02
H41
Q54
Document Type: 
Working Paper

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