Market clearing is the central issue in macroeconomics. Two centuries of debate on Say’s Law indicates that the issue is not yet settled. This essay proposes that double coincidence is a necessary condition for market clearing, in addition to the equality of demand and supply at equilibrium...

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 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...

Reference: Challenge, January/February, 1979

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...

The prisoner’s dilemma is sometimes invoked to describe the situation facing participants in tenders. Reasoning on the basis of the dilemma metaphor, it is contended that agreeing not to bribe public officials in order to win contracts (collaboration) leads to better outcomes than bribing...

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...

Property rights, whose security is often threatened by civil conflict, are a necessary condition for the establishment of a market economy. Yet a fundamental and unresolved empirical question is whether the lack of political and civil freedoms is one of the root causes of greater insecurity....

When asymmetry or non-verifiability of information, or non- excludability of users, makes contracts incomplete or unenforceable, and where for these and other reasons there are impediments to efficient bargaining, we show that private contracting will not generally assign the control of assets...

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...