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Why are some regions more innovative than others? The role of firm size diversity

Ajay Agrawal, Iain Cockburn (), Alberto Galasso and Alexander Oettl ()

No 9766, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: Large firms spawn spin-outs caused by innovations deemed unrelated to the firm's overall business. Small firms generate demand for specialized services that lower entry costs for others. We study the interplay of these two localized externalities and their impact on regional innovation. We examine MSA-level patent data during the period 1975-2000 and find that innovation output is higher in regions where large and small firms coexist. The finding is robust to across-region as well as within-region analysis and the effect is stronger in certain subsamples in a manner that is consistent with our explanation.

Keywords: cities; externalities; firm size diversity; innovation; patents; spin-outs (search for similar items in EconPapers)
JEL-codes: L16 O18 O47 (search for similar items in EconPapers)
Date: 2013-12
New Economics Papers: this item is included in nep-bec, nep-cse, nep-ent, nep-geo, nep-ino, nep-ipr, nep-pr~, nep-knm, nep-sbm and nep-ure
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