In this paper we compare the magnitude of local productivity advantages associated to two different spatial concentration patterns in Italy, i.e. urban areas (UA) and industrial districts (ID). UA typically display a huge concentration of population and host a wide range of economic activities,...

We propose two model-based measures of the intensity of local and global agglomeration patterns at the industry level. Spatial plant dispersion in a given industry is modeled as the outcome of an error components process that provides a convenient framework for the simultaneous treatment of...