International R&D spillovers in the multi-country Schumpeterian growth model

This paper reconsiders the multi-country Schumpeterian growth model and its empirical implications. We first show that the model implies a spatial econometric reduced form. Indeed, the global interdependance implied by international R&D spillovers needs to be taken into account in the theoretical model as well as in the empirical model. The spatial econometric model we propose includes the neoclassical growth model as a particular case. We can therefore test explicitly the role of R&D investment in the long run growth model. Finally, the proprieties of our spatial econometric specification allow evaluating explicitly the impact of home and foreign R&D spillovers.