In a haystack-type representation of a heterogeneous population that is evolving according to a payoff structure of a prisoner’s dilemma game, migration is modeled as a process of “swapping” individuals between heterogeneous groups of constant size after a random allocation fills the...

In the model of Stark et al. (1997, 1998), the possibility of employment in a developed country raises the level of human capital acquired by workers in the developing country. We show that this result holds even when workers have the option to save. -- Human capital formation ; Savings ;...

We present a theory that systematically and causally links the well-being of native inhabitants with variation in the extent of the assimilation of migrants. Recent empirical findings are yielded as predictions of the theory.

This paper asks whether population growth is conducive to the sustainability of cooperation. A simple model is developed in which farmers who live around a circular lake engage in trade with their adjacent neighbors. The payoffs from this activity are governed by a prisoner's dilemma "rule of...

This paper provides a novel explanation of “educated unemployment,” which is a salient feature of the labor markets in a number of developing countries. In a simple job-search framework we show that “educated unemployment” is caused by the perspective of international migration, that is,...

A framework that yields different possible patterns of migration as optimal solutions to a simple utility maximization problem is presented and explored. It is shown that seasonal migration arises as an optimal endogenous response to a comparison of costs (of living and of separation) and...

We ask which migration policy a developed country will choose when its objective is to attain the optimal skill composition of the country's workforce, and when the policy menu consists of an entry fee and a quota. We compare these two policies under the assumptions that individuals are...

Drawing on a model in which utility is derived from consumption and effort (labor supply), we ask how the deportation of a number of undocumented migrants influences the decisions regarding labor supply, consumption, and savings of the remaining undocumented migrants. We assume that the...

We study policies that are aimed at retaining a migrant workforce in a Gulf State while introducing a tax on migrant earnings. We single out Qatar as a case study. We consider two types of migrants: target migrants, and non-target migrants. If migrants are target migrants, we show that in order...

A country that experiences a shortage of workers with particular skills naturally considers two responses: import skills or produce them. Skill import may result in large-scale migration, which will not be to the liking of the natives. Skill production will require financial incentives, which...