This ERC grant has enabled our Innovation Centre at College de France to build and explore new micro data sets to analyze the determinants and impacts of innovation, firm dynamics, and income mobility.
A first issue we have explored, is that of growth measurement and the secular stagnation enigma. See (1) and (2). A second issue we investigated is that of the interplay between trade and innovation. A first study explored the effects of exports on innovation. [3] A second study looks at the effects of import shocks on French firms’ innovation incentives. [4]A third study combines French firm-level accounting data, patent data and customs data, to confirm the existence of knowledge spillovers induced by trade linkages. [5] Finally, a fourth study looks at the extent to which US firms react more to increased competition from China by lobbying more.
A third issue which we explored in the context of this ERC grant, is the issue of social mobility. We used newly accessible administrative data for research purposes to document the income social mobility in France over the last decades. [6]
A fourth issue is that of innovation diffusion worldwide. Thus, in a new exciting project developed in our Centre, Bergeaud and Verluise (2021), use modern Natural Language Processing to extract key patentees’ data (location, occupation, citizenship) from German (including East German), French, British and US patents since the late 19th century. While such data were inexistent (except for the US) before 1980, the authors were able to create a precise understanding of the dynamics of the diffusion of innovation since the 19th century in these four technology leaders. In an ongoing work, Verluise and Bergeaud also focus on the diffusion of breakthrough innovation in the recent period. [7]
References :
[1] See Aghion, P., Bergeaud, A., Boppart, T., Klenow, P. J., & Li, H. (2019). Missing growth from creative destruction. American Economic Review, 109(8), 2795-2822 and Aghion, P., Bergeaud, A., Boppart, T., & Bunel, S. (2018). Firm dynamics and growth measurement in France. Journal of the European Economic Association, 16(4), 933-956.
[2] See Aghion, P., Bergeaud, A., Boppart, T., Klenow, P. J., & Li, H. (2019). A theory of falling growth and rising rents (No. w26448). National Bureau of Economic Research.
[3] See Aghion, P., Bergeaud, A., Lequien, M., & Melitz, M. J. (2018). The impact of exports on innovation: Theory and evidence (p. 678). Cambridge, MA: National Bureau of Economic Research.
[4] See Aghion, P., Bergeaud, A., Lequien, M., Melitz, M. J & Zuber, T. (2021) The Vertical and Horizontal Components of the China Shock: Firm-Level Evidence from France
[5] See Aghion, P., Bergeaud, A., Gigout, T. Lequien, M. & Melitz, M. J (2020) Exporting ideas: Knowledge Flows from Expanding Trade in Goods
[6] See Aghion, P., Ciornohuz, V., Gravoueille, M., & Stantcheva, S. (2019). Reforms and Dynamics of Income Evidence Using New Panel Data.
[7] See Bergeaud, A., Verluise, C. (2021). One Century of Innovation in Europe and the US: New Data and Facts, Working Paper.