A characteristic of many bargaining situations is that the negotiators represents the interests of a set of parties (trade unions, political parties, etc.) with composite interests, whose bargaining behaviour is regulated by some collective decision mechanism. In this paper we provide a natural...

We consider an alternating offer bargaining model in which the players may agree to call in an arbitrator in case of disagreement. The main message of our study is that the mere presence of an arbitrator - who can only become active with the consent of both parties - in the background of...

We study how social norms and individual rationality in the process of coalition formation sustain a particular form of collective inefficiency, namely excessive entry in the joint production and exploitation of an excludable good. We term this phenomenon the `tragedy of the clubs'. We model...

We propose a new theory of choice between lotteries, which combines an 'economic’ view of decision making - based on a rational, though incomplete, ordering - with a 'psychological’ view - based on heuristics. This theory can explain observed violations of EU theory, namely all cyclical...

What can it mean for preferences to be rational when transitivity or completenss are not assumed? In this paper we provide a framework and a set of conditions to deal with this question. We provide representation results in terms of a pair of functions, a utility function and a vagueness function.

We propose a novel approach to modelling time preferences, based on a cognitive shortcoming of human decision makers: the perception of future events becomes increasingly `blurred' as the events are pushed further in time. Our model explains behavioural `anomalies' such as preference reversals...

Several contractual situations are such that the parties may `step out' of negotiations and take up outside opportunities only if there is mutual consent to do so. Examples include some forms of employer- employee negotiations, divorce procedures and arbitration. To analyse such cases we develop...

The resolution of a conflict often has an impact which extends beyond the remits of the parties directly involved in the confrontation (e.g. labour negotiations in sectors of public interest, where a strike would impact on the public at large). Once this is recognised, models addressing...

We study bilateral bargaining problems with interested third parties, the stakeholders that enjoy benefits upon a bilateral agreement. We explore the strategic implications of this third party involvement. Our main finding is that the potential willigness of the stake holders to make...

This paper studies a two-player alternating offers bargaining model in which one of the agents has the ability to damage permanently the ``pie'' bargained over. I show how this feature can result in an increase of the cost of rejecting an offer for the ``non-harming player''. Beside the...