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 examine a simple bargaining setting, where heterogeneous buyers and sellers are repeatedly matched with each other. We begin by characterizing efficiency in such a dynamic setting, and discuss how it differs from efficiency in a centralized static setting. We then study the allocations which...

In this paper we show that a feasible price allocation pair is a market equilibrium of a discrete market game if and only if it solves a linear programming problem. We use this result to obtain computable necessary and sufficient conditions for the existence of market equilibrium. We assume that...

The RVT predicts equilibrium prices in a world where investors ignore variance and only care about cumulative returns. Such prices determine intrinsic returns that satisfy the CAPM equation. This paper shows that assets that pay a constant (or constantly increasing) dividend but face each year...

The Relative Value Theory predicts equilibrium prices in a world in which time value of money is unique, and investors are risk-indifferent and only care about maximizing cumulative returns. This paper shows that RVT’s equilibrium prices determine intrinsic expected returns that satisfy the...

We study whether "coercive" public provision or voluntary private provision of public goods can survive when individuals who "vote with their feet" can choose between communities that differ in the way that public goods are provided. We obtain the following findings: (i) an equilibrium always...

Religious participation is much more widespread in the United States than in Europe, while Europeans tend to view sects more suspiciously than Americans. We propose an explanation for these patterns without assuming differences in preferences or market fundamentals. Religious markets may have...

All existing impossibility theorems on judgment aggregation over logically connected propositions have one of two restrictions: they either use a controversial systematicity condition or apply only to special agendas of propositions with rich logical connections. An important open question is...

It is known that majority voting among several individuals on logically interconnected propositions may generate irrational collective judgments. We generalize majority voting by considering quota rules, which accept each proposition if and only if the number of individuals accepting it exceeds...

If each member of a group assigns a certain probability to a hypothesis, what probability should the collective as a whole assign? More generally, how should individual probability functions be merged into a single collective one? I investigate this question in case that the individual...