This paper investigates the skills and the division of labor among participants in collective inventions. Our analysis draws on a large sample of projects registered at Sourceforge.net, the world’s largest incubator of open source software activity. We test the hypothesis that skill variety of...

This paper provides novel empirical evidence on the private value of patents and R&D. We analyze an unbalanced sample of firms from five EU countries - France, Germany, Switzerland, Sweden and the UK in the period 1985-2005. We explore the relationship between firm’s stock market value and...

The lack of firm-level data on innovative activities has always constrained the development of empirical studies on innovation. More recently, the availability of large datasets on indicators, such as R&D expenditures and patents, has relaxed these constrains and spurred the growth of a new wave...

By employing 1995-2000 data on European regions we construct an index of regional openness based on the share of hotels on population and the share of population that speaks a second language. This index has an impact on regional performance after controlling for technological capabilities,...

This paper examines entry and survival in the US software market of a sample of firms based in India, Ireland and Israel. Our investigation focuses on pre-entry technological capabilities, international linkages and home based experience as determinants of the firm entry decision and post-entry...