This paper is concerned with the determinants and consequences of immigrant/linguistic concentrations (enclaves). The reasons for the formation of these concentrations are discussed. Hypotheses are developed regarding ?ethnic goods? and the effect of concentrations on the immigrant?s language...

Should the national government undertake policies aimed at strengthening the economies of particular localities or regions? Agglomeration economies and human capital spillovers suggest that such policies could enhance welfare. However, the mere existence of agglomeration externalities does not...

This paper is concerned with the determinants and consequences of immigrant/linguistic concentrations (enclaves). The reasons for the formation of these concentrations are discussed. Hypotheses are developed regarding "ethnic goods" and the effect of concentrations on the immigrant?s language...

Empirical research on cities starts with a spatial equilibrium condition: workers and firms are assumed to be indifferent across space. This condition implies that research on cities is different from research on countries, and that work on places within countries needs to consider population,...

This paper discusses the prevalence of Silicon Valley-style localizations of individual manufacturing industries in the United States. Several models in which firms choose locations by throwing darts at a map are used to test whether the degree of localization is greater than would be expected...