Social conventions and norms can be modeled as equilibria of coordination games. it is argued that the critical mass necessary for a society to move from one convention, that is from one equilibrium, to another changes correspondingly with changes in the population structure due to generation...

Consider a group of individuals who have to collectively choose an outcome from a finite set of feasible alternatives. A scoring or positional rule is an aggregation procedure where each voter awards a given number of points, Wj, to the alternative she ranks in Jth position in her preference...

In this paper we propose a static model describing the commercial exploitation of a common property renewable resource by a population of agents. Players can cooperate or compete; cooperators maximize the utility of their group while defectors maximize their own profit. Agents aren't assumed to...

Since some Nash equilibria can be considered as irrational, we are interested here in refinements of Nash equilibria, i.e. concepts of solutions associating to each game a subset of Nash equilibria of this game. Considering only finite games with normal form, we first define the most desirable...

In strictly competitive games, equilibrium mixed strategies are invariant to changes in the ultimate prizes. Dixit & Skeath (1999) argue that this seems counter-intuitive. We show that this invariance is robust to dropping the independence axiom, but is removed if we drop the reduction axiom.

In a carrot game for a player, that player must help his opponent in order to get a desired response. In a stick game for a player, that player must hurt his opponent to get a desired response. We show that most all smooth monotonic two player games can be classified as: carrot for both, carrot...