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The Review of Economics and Statistics Vol. 97 No. 4 2015

Agglomerative Forces and Cluster Shapes

William Kerr1; Scott Duke Kominers2

1 Harvard University · 2 Harvard University Press

Abstract

We model spatial clusters of similar firms. Our model highlights how agglomerative forces lead to localized, individual connections among firms, while interaction costs generate a defined distance over which attraction forces operate. Overlapping firm interactions yield agglomeration clusters that are much larger than the underlying agglomerative forces themselves. Empirically, we demonstrate that our model’s assumptions are present in the structure of technology and labor flows within Silicon Valley. Our model further identifies how the lengths over which agglomerative forces operate influence the shapes and sizes of industrial clusters; we confirm these predictions using variations across patent technology clusters.

DOI
10.1162/rest_a_00471
Volume
97
Issue
4
Pages
877-899
Language
en
Sources
openalex crossref

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