Patents, R&D and Lag Effects: Evidence from Flexible Methods for Count Panel Data on Manufacturing Firms

@inproceedings{Gurmu2008PatentsRA,
  title={Patents, R&D and Lag Effects: Evidence from Flexible Methods for Count Panel Data on Manufacturing Firms},
  author={Shiferaw Gurmu and Fidel P{\'e}rez-Sebasti{\'a}n},
  year={2008}
}
Hausman, Hall and Griliches (1984) and Hall, Griliches and Hausman (1986) investigated whether there was a lag in the patent-R&D relationship for the U.S. manufacturing sector using 1970’s data. They found that there was little evidence of anything but contemporaneous movement of patents and R&D. We reexamine this important issue employing new longitudinal patent data at the firm level for the U.S. manufacturing sector from 1982 to 1992. To address unique features of the data, we estimate… CONTINUE READING

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Recent Developments in Event Count Models: A Survey,” Thomas Jefferson Center Discussion Paper #261, Department of Economics, University of Virginia

  • S. Gurmu, P. K. Trivedi
  • 1994
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