We analyze recent contributions to growth theory based on the model of expanding variety of Romer [Romer, P. (1990 … such applications, a key role is played by complementarities in the process of innovation. …

We analyse how spatial disparities in innovation activities, coupled with migration costs, affect economic geography … endogenous emergence of industry clusters. Spatial variations in knowledge spillovers lead to spatial concentration of more …. Narrowing the gap in knowledge spillovers across regions raises growth, and reduces regional inequality by making firms more …

distorts occupational choice. We study this possibility in the context of a model with horizontal innovation, where the …

several knowledge and innovation indicators, ranging from R&D expenditures, patent data, to newly released data on different … questioning the view that R&D (and formal knowledge in general) equates innovation and innovation equates regional growth. We … possible different attitudes and patterns of innovation that we control for, such as regional preconditions for knowledge and …

, both in the context of technological knowledge in particular and the decision theory in general. This paper surveys this …Following the development of knowledge economies, there has been a rapid expansion of economic analysis of knowledge … of knowledge related questions in terms of applicability and alternative approaches has led to the fragmentation of …