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Is Public R&D a Complement or Substitute for Private R&D? A Review of the Econometric Evidence

David, Paul A. - 1999

Is public R&D spending complementary and thus "additional" to private R&D spending, or does it substitute for and tend to "crowd out" private R&D? Conflicting answers are given to this question. We survey the body of available economectric evidence accumulated over the past 35 years. A framework...

Persistent link: https://www.econbiz.de/10012471411

Identifying Age, Cohort and Period Effects in Scientific Research Productivity : Discussion and Illustration Using Simulated and Actual Data on French Physicists

Hall, Bronwyn H. - 2005

The identification of age, cohort (vintage), and period (year) effects in a panel of individuals or other units is an old problem in the social sciences, but one that has not been much studied in the context of measuring researcher productivity. In the context of a semi-parametric model of...

Persistent link: https://www.econbiz.de/10012466933

Appropriability Mechanisms, Innovation and Productivity : Evidence from the UK

Hall, Bronwyn H. - 2014

between appropriability mechanisms, innovation and firm-level productivity. We enrich this model in several ways. First, we … consider different types of innovation spending and study the differences in estimates when innovation spending (rather than R …&D spending) is used to predict innovation in the CDM model. Second, we assume that a firm simultaneously innovates and chooses …

Persistent link: https://www.econbiz.de/10012458153

The Importance (or not) of Patents to UK Firms

Hall, Bronwyn H. - 2013

innovative performance measured as turnover due to innovation, but not between patenting and subsequent employment growth. The …

Persistent link: https://www.econbiz.de/10012459572