We investigate the conditions under which R&D investment by rival firms may be negatively or positively correlated. Using a two-stage game the influence of spillovers and product substitution is investigated. It is shown that under Cournot competition, the sign of the R&D reaction function...

We investigate the effectiveness of policies in favor of innovation in renew- able energy under dierent levels of competition. Using information regarding renewable energy policies, product market regulation and high-quality green patents for OECD countries since the late 1970s, we develop a...

This paper examines the relationship between the characteristics of firm knowledge in terms of capital, diversity and relatedness, and productivity. Panel data regression models suggest that unlike knowledge diversity, knowledge capital and knowledge relatedness explain a substantial share of...

We use comparable micro level panel data for 14 countries and a set of identically specified empirical models to investigate the relationship between exports and productivity. Our overall results are in line with the big picture that is by now familiar from the literature: Exporters are more...