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The Review of Economics and Statistics Vol. 106 No. 3 2024

The Heterogeneous Impact of Market Size on Innovation: Evidence from French Firm-Level Exports

Philippe Aghion1; Antonin Bergeaud2; Matthieu Lequien3; Marc J. Melitz4

1 Collège de France, LSE, and PSE · 2 Banque de France and CEP · 3 Insee, Banque de France and PSE · 4 Harvard University and NBER

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Abstract

We analyze how demand conditions faced by a firm in its export markets affect its innovation decisions. We exploit exogenous firm-level export demand shocks and find that firms respond by patenting more; furthermore, this response is driven by the subset of initially more productive firms. The patent response arises two to five years after the shock, highlighting the time required to innovate. In contrast, the demand shock raises contemporaneous sales and employment for all firms regardless of their productivity. This skewed innovation response to common demand shocks arises naturally from a model of endogenous innovation and competition with firm heterogeneity.

DOI
10.1162/rest_a_01199
Volume
106
Issue
3
Pages
608-626
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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