The circulation migration of the skilled and economic development

I will consider three questions. First, how inefficient is the global allocation of workers and how large are the gains from increased international migration? How do you measure these gains? We will see that standard GDP comparisons are not sufficient. Second, how would reallocating high-skill workers from low- to high wage areas affect low-wage countries? Third, what is the relationship between the net international flow of skilled individuals and the development of low-income countries? Which countries benefit the most and least from skill migration?