Matthias Doepke is the Nicholas Kaldor Professor of Economics at the London School of Economics. He is also a Research Fellow of CEPR, a Research Associate of NBER, and Co-Editor of the Journal of the European Economic Association. He received a Ph.D. in Economics from the University of Chicago in 2000 and was named an Alfred P. Sloan Research Fellow in 2005. His research is focused on understanding the determinants of long-run economic growth and on the role of family decision making in