Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/40662 
Year of Publication: 
2008
Series/Report no.: 
Nota di Lavoro No. 2008,23
Publisher: 
Fondazione Eni Enrico Mattei (FEEM), Milano
Abstract: 
We consider a two-stage public goods provision game: In the first stage, players simultaneously decide if they will join a contribution group or not. In the second stage, players in the contribution group simultaneously offer contribution schemes in order to influence the government's choice on the level of provision of public goods. Using perfectly coalition-proof Nash equilibrium (Bernheim, Peleg and Whinston, 1987 JET), we show that the set of equilibrium outcomes is equivalent to an 'intuitive' hybrid solution concept, the free-riding-proof core, which is always nonempty but does not necessarily achieve global efficiency. It is not necessarily true that an equilibrium lobby group is formed by the players with highest willingness-to-pay, nor is it a consecutive group with respect to their willingnesses-to-pay. We also show that the equilibrium level of public goods provision shrinks to zero as the economy is replicated.
Subjects: 
Common Agency
Public Good
Free Rider
Core
Lobby
Coalition Formation
Coalition-proof Nash Equilibrium
JEL: 
C71
C72
F13
H41
Document Type: 
Working Paper

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