Innovation and technological change are central to the quest for regional development. In the globally … structure characterised by its extent of specialisation, competition and diversity, to yield innovation and productivity growth … (diversity) and Porter externalities (competition) that have provided alternative explanations for innovation and urban growth …

-2005. Innovation outcomes are measured by means of the number of patent applications per million inhabitants. Given the geographical … concentration and subsequent diffusion of innovation activity, and the spatial selectivity of immigrants' location choices, we take … of McDonald's restaurants as a novel instrument for immigration. The results confirm that innovation is clearly a …