In the recent past, interest of Science, Technology, and Innovation (STI) policies to influence the innovation behaviour of firms has been increased considerably. This gives rise to the notion of behavioural additionality, broadening traditional evaluation concepts of input and output...

It is widely acknowledged that new technological specializations of regions are to a large extent driven by the recombination of existing knowledge and capabilities. Since this process is path-dependent and self-reinforcing, it can easily lead to technological lock-ins. A key issue is therefore...

Editorial Introduction -- Part A: Analytic Advances and Methodology -- Part B: Structure and Spatial Characteristics of R&D Networks -- Part C: Impact of R& D Networks and Policy Implications -- Epilogue