An empirical note on structural breaks in the U.S. R & D production function: Semi-endogenous versus schumpeterian growth models
Using data from the U.S. this paper provides new evidence in support of Schumpeterian growth theory. In particular, the second generation growth models discussed by Ha and Howitt (2007) and Madsen (2008) are extended to consider structural breaks in the R&D production function. The results favor the Schumpeterian theory with a shift in the R&D production function over time.
Saunoris, J. W., & Payne, J. E. (2011). An empirical note on R & D growth models with regional implications. Journal of Regional Analysis & Policy, 41(1), 16–21.