Human capital accumulation is introduced in a growth model with R&D-driven expansion in variety and quality of intermediate goods and knowledge spillovers from both research activities. Economic growth is no longer uniquely tied to population growth as previous growth models without scale...

There is a family of models with Physical, Human capital and Ramp;D for which convergence properties have been discussed (Arnold, 2000a; Gomez, 2005). However, spillovers in Ramp;D have been ignored in this context. We introduce spillovers in this model and derive its steady-state and stability...

The endogenous growth literature includes two competing views concerning the influence of human capital on output growth: human capital may be a conventional input and determine just the level of output or it may be essential to raise productivity via R&D. Distinguishing empirically between...