Hall, Bronwyn; Mairesse, Jacques; Turner, Laure - In: Economics of Innovation and New Technology 16 (2007) 2, pp. 159-177
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...