R&D, innovation spillover and business cycles

This paper shows that technology shocks have the largest impact on economies when industries adopt innovations of other industries at a high rate, if costs of adopting new technologies and adjusting R&D expenditures are low, and if innovators face a high degree of competition. It is not the level but the spillover of innovations across industries that is the key determinant of these findings. Under the conditions mentioned above, R&D becomes less procyclical and smoother along the business cycle yet R&D driven innovations have a larger impact on output since these innovations spillover at a higher rate. These inferences are drawn from a dynamic stochastic general equilibrium framework describing a real economy with endogenous growth. The latter feature allows us to infer the welfare implications of R&D processes.