A model of protocoalition bargaining with breakdown probability

Montero, Maria (2015) A model of protocoalition bargaining with breakdown probability. Games, 6 (2). pp. 39-56. ISSN 2073-4336

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This paper analyses a model of legislative bargaining in which parties form tentative coalitions (protocoalitions) before deciding on the allocation of a resource. Protocoalitions may fail to reach an agreement, in which case they may be dissolved (breakdown) and a new protocoalition may form. We show that agreement is immediate in equilibrium, and the proposer advantage disappears as the breakdown probability goes to zero. We then turn to the special case of apex games and explore the consequences of varying the probabilities that govern the selection of formateurs and proposers. Letting the breakdown probability go to zero, most of the probabilities considered lead to the same ex post pay-off division. Ex ante expected pay-offs may follow a counterintuitive pattern: as the bargaining power of weak players within a protocoalition increases, the weak players may expect a lower pay-off ex ante.

Item Type: Article
Keywords: coalition formation; legislative bargaining; apex games
Schools/Departments: University of Nottingham UK Campus > Faculty of Social Sciences > School of Economics
Identification Number: https://doi.org/10.3390/g6020039
Depositing User: Montero, Maria
Date Deposited: 12 Jun 2015 08:13
Last Modified: 21 Sep 2016 16:34
URI: http://eprints.nottingham.ac.uk/id/eprint/29066

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