Empirical studies in the migration literature have shown that migration enclaves (networks) negatively affect the language proficiency of migrants. These studies, however, ignore the choice of location as a function of language skills. Using data on Mexican migration to the US, we show that...

Fundamentalist organizations and the terrorists they spawn do not arise of a vacuum. Combating terrorism requires understanding the principles of groups’ formation, development and growth. We use economic theory to explain the creation and development of fundamentalist groups. In this paper we...

This paper addresses the question: Why and where do immigrants cluster? We examine the relative importance and interaction of two alternative explanations of immigrant clustering: (1) network externalities and (2) herd behavior. We advance the theory by presenting a framework encompassing both...

In this paper we develop a theory of Kosher Wars under which Rabbis (certifying authorities) compete to enhance the level of Jewish observation of their congregations. The level of observance can be seen as the Rabbi's rents. Our rent-seeking model explains the establishment of Kashrut...

We model the aid allocation decision where the donor government has announced that good governance is the criterion for receiving aid. Potential recipients must compete for the aid funds. The structure of the competition is important to the donor in terms of achieving good governance, and to the...

We argue that a purpose of foreign aid is to whet the appetite of the recipient in order to bring about a long term commitment to what the donor perceives as a need, but which the recipient may rank lower down on his list of undertakings, or may be sufficiently resource constrained as to be...

This paper analyzes the decentralization of decision-making in aid-giving in a theoretical rent-seeking framework. In this analysis the root donor establishes a necessary criterion for potential recipients: good governance. The potential recipients compete in hierarchal contests for funds. The...

Governments do not have perfect information regarding the priorities and the needs of different groups in the economy. This lack of knowledge opens the door for different groups to lobby the government in order to receive the government’s support. We set up a model of hierarchical contests and...

Hierarchical firms are enterprises with rigid internal job ladders. We examine the state enterprise as the prototypical hierarchical firm. In the state enterprise, promotion of employees through the internal hierarchy is determined by the workers’ allocation of time between rent seeking and...

We examine who benefits when there is a strong leader in place, and those who benefit when a situation lacks a proper leader. There are fractious terrorist groups who seek to serve the same people in common cause against a common enemy. The groups compete for rents obtained from the public by...