We examine the 'home bias' of international knowledge spillovers as measured by the speed of patent citations (i.e. knowledge spreads slowly over international boundaries). We present the first compelling econometric evidence that the geographical localization of knowledge spillovers has fallen...

This paper investigates how physical, organisational, institutional, cognitive, social, and ethnic proximities between inventors shape their collaboration decisions. Using a new panel of UK inventors and a novel identification strategy, this paper systematically explores the net effects of all...

This paper employs data from an extensive European survey to produce one of the first systematic assessments of the private economic value of patents. The estimated mean of our patent value distribution is higher than 3 million Euros, the median is about one-tenth, and the mode is around a few...

Despite substantial regional expenditures at both national and community level, European regional policies do not appear to deliver. The evidence suggests that neither efficiency gains nor reduced regional inequalities are attained. If there is any positive impact at all, then it is at the most...

This Paper examines the relationship between foreign ownership and productivity, paying particular attention to two issues neglected in the existing literature – the role of multinationals in service sectors and the importance of R&D activity conducted by foreign multinationals. We review...

Convergence in per capita income across countries turns on whether technological knowledge spillovers are global or local in a large class of models. This Paper estimates the amount of spillovers from R&D expenditures in major industrialized countries on a geographic basis. A new data set is...

This Paper links the performance of new technology firms, measured in terms of growth, to geographic location. We introduce a model of firm growth that is specific to characteristics of the location as well as the firm and industry. The model is estimated using a new dataset identifying the...

Product development within and across community-based and geographically dispersed virtual organizations is becoming an increasingly important mechanism through which individual knowledge holders create and disseminate knowledge in joint efforts to generate products. Without the benefits of...

British regions are becoming increasingly culturally diverse, with migration as the main driver. Does this diversity benefit local economies? This research examines the impact of cultural diversity on the entrepreneurial performance of UK regions. We focus on two largely overlooked factors, the...

We quantify the causal effect of foreign investment on total factor productivity (tfp) using a new global firm-level database. Our identification strategy relies on exploiting the difference in the amount of foreign investment by financial and industrial investors and simultaneously controlling...