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 swappingʺ individuals between heterogeneous groups of constant size after a random allocation fills the haystacks,...

Extending both the "harmful brain drain" literature and the "beneficial brain gain" literature, this paper analyzes both the negative and the positive impact of migration by skilled individuals in a unified framework. The paper extends the received literature on the "harmfulbrain drain" by...

This paper synthesizes and extends recent research on "The New Economics of the Brain Drain." In a unified framework, the paper shows that while recently identified adverse repercussions of the brain drain exacerbate the long-recognized impacts of the brain drain, longer-term consequences turn...