What explains the quantity and quality of local inventive activity?

Gerald Carlino and Robert Hunt

No 09-12, Working Papers from Federal Reserve Bank of Philadelphia

Abstract: The authors geocode a data set of patents and their citation counts, including citations from abroad. This allows them to examine both the quantity and quality of local inventions. They also refine their data on local academic R&D to explore effects from different fields of science and sources of R&D funding. Finally, they incorporate data on congressional earmarks of funds for academic R&D. ; With one important exception, results using citation-weighted patents are similar to those using unweighted patents. For example, estimates of the returns to density (jobs per square mile) are only slightly changed when using citation-weighted patents as the dependent variable. But estimates of returns to city size (urbanization effects) are quite sensitive to the choice of dependent variable. ; Local human capital is the most important determinant of per capita rates of patenting. A 1 percent increase in the adult population with a college degree increases the local patenting rate by about 1 percent. ; With few exceptions, there is little variation across fields of science in the contribution of academic R&D to patenting rates. The exceptions are computer and life sciences, where the effects are smaller. There is greater variation in the contribution of R&D funded by different sources-academic R&D funded by the federal government generates smaller increases in patenting rates than R&D funded by the university itself. This effect is somewhat stronger for federally funded applied R&D than for basic R&D. The authors also find small negative effects for cities with greater exposure to academic R&D allocated by congressional earmarks. ; They discuss the implications of these results for policy and future research.

Keywords: Labor market; Patents (search for similar items in EconPapers)
Date: 2009
New Economics Papers: this item is included in nep-ino, nep-ipr, nep-pr~ and nep-ure
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (19)

Downloads: (external link)
https://www.philadelphiafed.org/-/media/frbp/asset ... ers/2009/wp09-12.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:fip:fedpwp:09-12

Ordering information: This working paper can be ordered from

Access Statistics for this paper

More papers in Working Papers from Federal Reserve Bank of Philadelphia Contact information at EDIRC.
Bibliographic data for series maintained by Beth Paul ().