RT Journal Article SR Electronic T1 Ethnic Complementarities after the Opening of China: How Chinese Graduate Students Affected the Productivity of Their Advisors JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 0516-7949R DO 10.3368/jhr.53.1.0516-7949R A1 Borjas, George J. A1 Doran, Kirk B. A1 Shen, Ying YR 2017 UL http://jhr.uwpress.org/content/early/2017/02/01/jhr.53.1.0516-7949R.abstract AB The largest flow of scientific talent in the world is the migration of international students to universities in industrialized countries. We use the opening of China in 1978 to estimate this flow’s causal effect on the productivity of their professors in the U.S. Our identification relies on both the suddenness of China’s opening and on a key feature of scientific production: intra-ethnic collaboration. The increased access that Chinese-American advisors had to a new talent pool led to an increase in their productivity, in both coauthorships and solo-authored papers. Comparable non-Chinese advisors mentored fewer non-Chinese students and published fewer papers.