In a game with positive externalities, such as e.g. the standard environmental externality game used in the analysis of international environmental agreements, the solutions having the property of coalitional internal stability, when they exist, are compared in this paper with the solutions with...

This paper introduces a core concept, called the γ-core, in the primitive framework of a strategic game. For a certain class of strategic games, it is a weaker concept than the strong Nash equilibrium, but in general stronger than the conventional α- and β- cores. We argue that the coalition...

This paper provides a methodology to study coalition formation problems with externalities and heterogeneous players, when some subset of the players can act as “coalition developers” over time. The framework provided here allows to explicitly predict the timing of admission to coalitions,...

Is selfishness always a bad thing, in the sense that people can only be better off when everyone is concerned with the well-being of others as well as with his own, or are there situations in which altruism can actually make things worse for all people involved ? This paper tackles this question...

The paper presents a game-theoretic model to investigate to what extent an employee privatization program of a State owned firm can be feasible under certain assumptions concerning the players' objective functions and the market structure in which the firm operates. The public managers are...

In this paper we analyze the negotiation strategy of the European Union regarding the formation of an international climate agreement for the post-2012 era. We use game theoretical stability concepts to explore incentives for key players in the climate policy game to join future climate...

We model the decision problems faced by the members of societies whose new members are determined by vote. We adopt a number of simplifying assumptions: the founders and the candidates are fixed; the society operates for k periods and holds elections at the beginning of each period; one vote is...

Consider a country with two regions that have developed differently so that their current levels of energy efficiency differ. Each region's production involves the emission of pollutants, on which a regulator might impose restrictions. The restrictions can be related to pollution standards that...

Is selfishness always a bad thing, in the sense that people can only be better off when everyone is concerned with well-being of others as well as with his own, or are there situations in which altruis, can actually make things worse for all people involved? This paper tackles this question in...