authors find that the stock of human capital, the level of domestic innovation and technological adaptation, and the level of ….15 percentage point. In terms of innovation, the authors find that a 20 percent increase in the annual number of USPTO patents …

include measures of innovation outcomes as well as variables related to innovation effort. The main indicator of innovation … outputs is patents. The main variables related to innovation inputs are investment in research and development (R&D) and … of innovation outputs and inputs by looking at the over-time behavior of the relevant series and comparing the …