Which types of relatedness matter in regional growth? Industry, occupation and education. Regional Studies. This paper provides a conceptual discussion of relatedness, which suggests a focus on individuals as a complement to firms and industries. The empirical relevance of the main arguments is tested by estimating the effects of related and unrelated variety in education and occupation among employees, as well as in industries, on regional growth. The results show that occupational and educational related variety are positively correlated with productivity growth, which supports the conceptual discussion put forth in the paper. In addition, related variety in industries is found to be negative for productivity growth, but positive for employment growth.
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