Harvard Business School
Boston, MA 02163
NBER Working Papers and Publications
|September 2018||Taxation and Innovation in the 20th Century|
with Ufuk Akcigit, John Grigsby, Stefanie Stantcheva: w24982
This paper studies the effect of corporate and personal taxes on innovation in the United States over the twentieth century. We use three new datasets: a panel of the universe of inventors who patent since 1920; a dataset of the employment, location and patents of firms active in R&D since 1921; and a historical state-level corporate tax database since 1900, which we link to an existing database on state-level personal income taxes. Our analysis focuses on the impact of taxes on individual inventors and firms (the micro level) and on states over time (the macro level). We propose several identification strategies, all of which yield consistent results: i) OLS with fixed effects, including inventor and state-times-year fixed effects, which make use of differences between tax brackets within...
|February 2017||Immigration and the Rise of American Ingenuity|
with Ufuk Akcigit, John Grigsby: w23137
This paper builds on the analysis in Akcigit et al. (2017) by using US patent and Census data to examine macro and micro-level aspects of the relationship between immigration and innovation. We construct a measure of foreign born expertise and show that technology areas where immigrant inventors were prevalent between 1880 and 1940 experienced more patenting and citations between 1940 and 2000. We also show that immigrant inventors were more productive during their life cycle than native born inventors, although they received significantly lower levels of labor income than their native born counterparts. Overall, the contribution of foreign born inventors to US innovation was substantial, but we also find evidence of an immigrant inventor wage-gap that cannot be explained by differentials ...
Published: Ufuk Akcigit & John Grigsby & Tom Nicholas, 2017. "Immigration and the Rise of American Ingenuity," American Economic Review, American Economic Association, vol. 107(5), pages 327-331, May. citation courtesy of
|January 2017||The Rise of American Ingenuity: Innovation and Inventors of the Golden Age|
with Ufuk Akcigit, John Grigsby: w23047
We examine the golden age of U.S. innovation by undertaking a major data collection exercise linking historical U.S. patents to state and county-level aggregates and matching inventors to Federal Censuses between 1880 and 1940. We identify a causal relationship between patented inventions and long-run economic growth and outline a basic framework for analyzing key macro and micro-level determinants. We find a positive relationship between innovation and drivers of regional performance including population density, financial development and geographic connectedness. We also explore the impact of social structure measured by slavery and religion. We then profile the characteristics of inventors and their life cycle finding that inventors were highly educated, positively selected through exit...
|August 2014||Did Bank Distress Stifle Innovation During the Great Depression?|
with Ramana Nanda: w20392
We find a negative relationship between bank distress and the level, quality and trajectory of firm-level innovation during the Great Depression, particularly for R&D firms operating in capital intensive industries. However, we also show that because a sufficient number of R&D intensive firms were located in counties with lower levels of bank distress, or were operating in less capital intensive industries, the negative effects were mitigated in aggregate. Although Depression era bank distress was associated with the stifling of innovation, our results also help to explain why technological development was still robust following one of the largest shocks in the history of the U.S. banking system.
Published: Nanda, Ramana & Nicholas, Tom, 2014. "Did bank distress stifle innovation during the Great Depression?," Journal of Financial Economics, Elsevier, vol. 114(2), pages 273-292. citation courtesy of