In light of the shortage of healthcare professionals, many developing countries operate a defacto two-tiered system of healthcare provision, in which Community Health Workers (CHWs) supplement service provision by fully qualified physicians. CHWs are relatively inexpensive to train but can treat...

In a citizen candidate equilibrium, there are n candidates each of whom announces a policy in a policy space of dimension d. Thus the policy equilibrium lives in a space of dimension nd. We show, in a canonical example, that the equilibrium manifold is generically of dimension nd. In particular,...

We propose a theory of party competition (two parties, single-issue) where citizens acquire party membership by contributing money to a party, and where a member's influence on the policy taken by her party is proportional to her campaign contribution. The polity consists of informed and...

Utilitarians, egalitarians, prioritarians, and sufficientarians each provide examples of situations demonstrating, often compellingly, that a sensible ethical observer must adopt their view and reject the others. We argue, to the contrary, that an attractive ethic is eclectic, in the sense of...

Human-generated greenhouse gas emissions imperil a global resource: a biosphere capable of supporting life as we know it. What is the fair way to share this scarce resource across present and future generations and across regions of the world? This study offers a new perspective based on the...

The justification of using GNP per capita as a measure of economic development is utilitarian ethics plus an assumption that no needs are more urgent than others. Here, we advocate a measure of economic development based on the degree to which the society in question has equalized opportunities...

Several authors in the economics literature have referred to Kantian behavior, informally, as a kind of cooperation. We model this notion precisely, and define two kinds of Kantian allocation. An set of strategies by players is Kantian if, informally, no player would advocate that all players...

We study a vertically differentiated market where two firms simultaneously choose the quality and price of the good they sell and where consumers also care for the average quality of the goods supplied. Firms are composed of two factions whose objectives differ: one is maximizing profit while...

Why do both left and right political parties almost always propose progressive income taxation schemes in political competition? Analysis of this problem has been hindered by the two-dimensionality of the issue space. To give parties a choice over a domain which contains both progressive and...