We investigate the effect of specialisation upon the level of metropolitan wage per worker. Specialisation is measured by the share of metropolitan earnings in each of five traded goods and services sectors. Sectoral specialisations are assumed to be determinants of location-specific...

Identifying the elements of physical and organizational infrastructure most important for technological innovation is challenging for at least two reasons: measuring technological innovation is difficult; and establishing causality is difficult. In this paper, we partially address these paired...