Co-operation in Regional Innovation Systems

.......................................... II 1. Introduction ..................................... 1 2. Hypotheses and empirical evidence ...................... 2 3. Data .......................................... 3 3.1 The spatial framework ........................... 4 3.2 Indicators for cooperation ......................... 5 4. Overview on cooperative relationships in the sample ........... 7 5. Interregional comparisons ............................ 8 5.1 Research approach .............................. 9 5.2 Characteristics of cooperating firms ...................11 6. The importance of spatial proximity for cooperative relationships ...20 7. Conclusions .....................................20 References ........................................23 - II - Abstract The paper deals with cooperative relationships of manufacturing firms in three German regions. By applying a hurdle-count data model, differences between regions as well as between smaller and larger firms are analyzed...