High-Skilled Migration and Agglomeration

[1 ]Wellesley Centers for Women, Wellesley College, Wellesley, Massachusetts 02481;

[2 ]Entrepreneurial Management Unit, Harvard Business School, Boston, Massachusetts 02163;

[3 ]National Bureau of Economic Research, Cambridge, Massachusetts 02138

[4 ]Development Research Group, World Bank, Washington, DC;

[5 ]Department of Economics, University of Western Australia, Perth WA 6009, Australia;

[6 ]International Migration Institute, University of Oxford, Oxford OX1 3TB, United Kingdom