This paper studies how the strength of social ties is affected by the geographical location of other individuals and their social capital. We characterize the equilibrium in terms of both social interactions and social capital. We show that lower travel costs increase not only the interaction...

This paper re-visits the empirical failure to establish a clear link between R&D efforts and patent counts at the industry level. It is claimed that the 'propensity-to-patent' concept should be split into an 'appropriability propensity' and a 'strategic propensity'. The empirical contribution is...

This paper provides an update of the paper From R&D to Productivity Growth: Do the Institutional Settings and the Source of Funds of R&D Matter? (Guellec and van Pottelsberghe 2004). We present estimates of the long-term impact of various sources of knowledge (R&D performed by the business...

The EU 2020 strategy relies on innovation as the core driver of economic dynamics. The present Forum discusses the strategies established by the European Commission and the member states for the intensifi cation of innovative activities. Analyses of often neglected aspects of innovation policy,...