Local clusters and the co-location of firms are repeatedly related to a high level of innovativeness in the literature. The underlying argument is that firms that are co-located with other firms of the same industry undertake more innovation than “lonely” firms because of spillovers, local...

The innovation performance of regions or nations has been repeatedly measured in the literature. What is missing, however, is a discussion of what innovation performance of a region or nation means. How do regions or nations exactly contribute to the innovation output of firms? And how can this...