Back to Basics: Why do Firms Invest in Research?

Abstract

If scientific knowledge is a public good, why do firms invest in research?This paper revisits this classic question with new data on patent citations to scientific publications by corporations.Using data on 4,736 firms for the period 1980-2006, we document that corporate investment in research is closely related to its use in internal invention.Specifically, firms that build on their scientific research in their inventive activity invest more in research than those that are less successful in using their research internally.Consistent with this, research that is internally used is valued more and is more productive.Our results are consistent with the view that to justify further investment in research corporate scientists need to demonstrate that their recent scientific work is useful for the core inventive activity of the sponsoring firm.

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