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PRODUCTIVITY AND THE DENSITY OF HUMAN CAPITAL *
Author(s) -
Abel Jaison R.,
Dey Ishita,
Gabe Todd M.
Publication year - 2012
Publication title -
journal of regional science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.171
H-Index - 79
eISSN - 1467-9787
pISSN - 0022-4146
DOI - 10.1111/j.1467-9787.2011.00742.x
Subject(s) - metropolitan area , human capital , economics , standard deviation , productivity , stock (firearms) , econometrics , endogeneity , economies of agglomeration , labour economics , total factor productivity , physical capital , demographic economics , microeconomics , geography , statistics , economic growth , mathematics , archaeology
We estimate a model of urban productivity in which the agglomeration effect of density is enhanced by a metropolitan area's stock of human capital. Estimation accounts for potential biases due to the endogeneity of density and industrial composition effects. Using new information on output per worker for U.S. metropolitan areas along with a measure of density that accounts for the spatial distribution of population, we find that a doubling of density increases productivity by 2–4 percent. Consistent with theories of learning and knowledge spillovers in cities, we demonstrate that the elasticity of average labor productivity with respect to density increases with human capital. Metropolitan areas with a human capital stock one standard deviation below the mean realize no productivity gain, while doubling density in metropolitan areas with a human capital stock one standard deviation above the mean yields productivity benefits that are about twice the average. These patterns are particularly pronounced in industries where the exchange of information and sharing of ideas are important parts of the production process.