The Human Capital Stock: A Generalized Approach
September 2011 (NBER Working Paper #17487)
Abstract / Paper

The Knowledge Trap: Human Capital and Development, Reconsidered
September 2011 (NBER Working Paper #14138)
Abstract / Paper

Temperature Shocks and Economic Growth: Evidence from the Last Half-Century
with Melissa Dell and Ben Olken
August 2011 (NBER Working Paper #14132)
Abstract / Paper / Online Appendix

Age Dynamics in Scientific Creativity
with Bruce Weinberg
Proceedings of the National Academy of Sciences
November 2011
Paper / Supplementary Materials / Data

As Science Evolves, How Can Science Policy?
NBER Innovation Policy and the Economy vol. 11, March 2011
Abstract / Paper

Climate Shocks and Exports
with Ben Olken
American Economic Review Papers and Proceedings, May 2010
Paper / Data

Age and Great Invention
Review of Economics and Statistics, February 2010
Abstract / Paper

National Leadership and Economic Growth
New Palgrave Dictionary of Economics, September 2009
Abstract / Paper

Hit or Miss? The Effect of Assassinations on Institutions and War
with Ben Olken
American Economic Journal: Macroeconomics, July 2009
Abstract / Paper / Data and Programs

Temperature and Income: Reconciling New Cross-Sectional and Panel Estimates
with Melissa Dell and Ben Olken
American Economic Review Papers and Proceedings, May 2009
Paper / Online Appendix

The Burden of Knowledge and the Death of the Renaissance Man: Is Innovation Getting Harder?
Review of Economic Studies, January 2009
Abstract / Paper

Multi-University Research Teams: Shifting Geography and Social Stratification in Science
with Stefan Wuchty and Brian Uzzi
Science, November 2008
Abstract / Paper / Supplementary Materials

The Anatomy of Start-Stop Growth
with Ben Olken
Review of Economics and Statistics, August 2008
Abstract / Paper / Longer Working Paper

The Increasing Dominance of Teams in the Production of Knowledge
with Stefan Wuchty and Brian Uzzi
Science, May 2007
Abstract / Paper / Supplementary Materials

Do Leaders Matter? National Leadership and Growth Since World War II
with Ben Olken
Quarterly Journal of Economics, August 2005
Abstract / Paper