This paper reviews the empirical literature on rates of return on R&D and interprets the economic significance of these estimates using a semi-endogenous growth model with a calibrated knowledge production sector. We analyse how R&D subsidies, a reduction of entry barriers for start-ups and...

We examine the economic implications of infrastructure investment policies that try to improve economic conditions in Russia's peripheral regions. Our analysis of firm-level industrial data for 1989 and 2004 highlights a "death of distance" in industrial location, with increasing concentration...

This paper presents new estimates for 21 OECD countries covering the period 1960-2001, focusing on two questions: To what extent does the impact of public capital on output differ across countries? And to what extent does it differ over time? Using vector autoregressions (VARs), we find that in...

This paper provides an overview of both theoretical and empirical literature on the link between public investment (capital) and economic growth (national income). We first survey the channels through which public capital can conceivably affect growth. We then turn to reviewing the existing...