%0 Report %A Hunter, Rosalind S. %A Oswald, Andrew J. %A Charlton, Bruce G. %T The Elite Brain Drain %D 2009 %8 2009 Feb %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 4005 %U https://www.iza.org/index.php/publications/dp4005 %X We collect data on the movement and productivity of elite scientists. Their mobility is remarkable: nearly half of the world's most-cited physicists work outside their country of birth. We show they migrate systematically towards nations with large R&D spending. Our study cannot adjudicate on whether migration improves scientists' productivity, but we find that movers and stayers have identical h-index citations scores. Immigrants in the UK and US now win Nobel Prizes proportionately less often than earlier. US residents' h-indexes are relatively high. We describe a framework where a key role is played by low mobility costs in the modern world. %K mobility %K science %K brain drain %K citations