Abstract
A general consensus exists in the debate on innovation-oriented regional development, in which cooperation in innovation between manufacturing firms, service firms and research institutions continues to grow in importance with respect to business success and the economic performance of a region—at least for some region types. The academic discussion, thus far, has been shaped by a large number of outstanding theoretical studies focusing on this topic from the perspective of the innovative milieu concept, the network theory (spatial version), the regional innovation systems approach or the transaction cost theory. Up to now, comparative empirical studies have not been performed evaluating the significance of innovation networks over a sufficiently large and statistically representative data set for the various types of regions. This is the goal of this issue of European Planning Studies, which is introduced in this article. Briefly, the basic concepts for explaining network-oriented regional development are described and the essential features of the European Regional Innovation Survey (ERIS) are presented—developed by a research team of German economic geographers and regional economists. Between 1995 and 1999 ERIS carried out three extensive surveys in 11 European regions with a total return of 8635 questionnaires, in an effort to identify, systematize, and quantify linkages between innovative players. The question of the range of such innovative linkages plays a central role in this analysis.