Understanding R&D PolicyEfficiency or Politics?

Abstract

This paper searches for the determinants of government-funded R&D. The goal is to disentangle whether the efficiency considerations overwhelmingly emphasized by the theoretical literature are indeed the main driving force behind public R&D expenditures. Another goal of the paper is to assess whether other types of innovation policy such as the degree of patent protection can have an impact on private R&D. I find that there are important differences between rich and poor nations at this respect. In particular, R&D-specific efficiency factors are not significant to explain public R&D in rich nations, whereas related variables such as the access to private credit and knowledge spillovers are important in less developed economies; in rich countries, public innovation effort can be better explained by the political economy variables that determine the size of governments. Private R&D, on the other hand, depends in high income economies on R&D policies that try to improve R&D efficiency, but is highly determined by government size in less income nations. Results suggest that more research on political economy theories of innovation is essential to understand R&D investment.