Spatial Growth and Industry Age

32 Pages Posted: 9 Aug 2007 Last revised: 8 May 2022

See all articles by Klaus Desmet

Klaus Desmet

Southern Methodist University (SMU); Centre for Economic Policy Research (CEPR)

Esteban Rossi-Hansberg

University of Chicago - Department of Economics; National Bureau of Economic Research (NBER)

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Date Written: August 2007

Abstract

U.S. county data for the last 20 or 30 years show that manufacturing employment has been deconcentrating. In contrast, the service sector exhibits concentration in counties with intermediate levels of employment. This paper presents a theory where local sectoral growth is driven by technological diffusion across space. The age of an industry -- measured as the time elapsed since the last major general purpose technology innovation in the sector -- determines the pattern of scale dependence in growth rates. Young industries exhibit non-monotone relationships between employment levels and growth rates, while old industries experience negative scale dependence in growth rates. The model then predicts that the relationship between county employment growth rates and county employment levels in manufacturing at the turn of the 20th century should be similar to the same relationship in services in the last 20 years. We provide evidence consistent with this prediction.

Suggested Citation

Desmet, Klaus and Rossi-Hansberg, Esteban A., Spatial Growth and Industry Age (August 2007). NBER Working Paper No. w13302, Available at SSRN: https://ssrn.com/abstract=1005904

Klaus Desmet (Contact Author)

Southern Methodist University (SMU) ( email )

6212 Bishop Blvd.
Dallas, TX 75275
United States

Centre for Economic Policy Research (CEPR)

London
United Kingdom

Esteban A. Rossi-Hansberg

University of Chicago - Department of Economics

1126 East 59th Street
Chicago, IL 60637
United States

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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