This work is focused on identifying the relationship an economic system and its policies have with the environment. The biosphere is chosen in particular as object of analysis but this can be extended by means of an ecosystem recursive properties. The common factor involved in the relationship...

This paper examines existence of Markov equilibria in the class of dynamic political games (DPGs). DPGs are dynamic games in which political institutions are endogenously determined each period. The process of change is both recursive and instrumental: the rules for political aggregation at date...

For groups that must make several decisions of similar form, we define a simple and general mechanism that is designed to promote social efficiency. The mechanism links the various decisions by forcing agents to budget their representations of preferences so that the frequency of preferences...

This paper studies dynamic, endogenous institutional change. We introduce the class of dynamic political games (DPGs), dynamic games in which future political aggregation rules are decided under current ones, and the resulting institutional choices do not affect payoffs or technology directly. A...

We present a general model of two players contest with two types of efforts. Contrary to the classical models of contest, where each player chooses a unique effort, and where the outcome depends on the efforts of all the players, contestants are allowed to reduce the effort of the opponent....

This paper develops a positive analysis of stable group formation, highlighting the role of conflict management within groups. The analysis is based on a model of sequential conflict, starting with a "winner- take-all" contest for control of some resource. When a group forms, members pool their...

This paper considers an economy where groups compete in a contest for power to redistribute future income in their favor. An increased external threat of terrorism--either an increase in the likelihood of a successful terrorist attack or a greater loss of income in the event of a successful...

This paper develops a positive analysis of alliance formation that builds on a simple economic model featuring a “winner-take-all” contest for control of some resource. When an alliance forms, members pool their efforts in that contest and,if successful, apply the resource to a joint...

We define the canonical form of a cost spanning tree problem. The canonical form has the property that reducing the cost of any arc, the minimal cost of connecting agents to the source is also reduced. We argue that the canonical form is a relevant concept in this kind of problems and study a...