Firms are more productive on average in larger cities. Two main explanations have been offered: firm selection (larger … cities toughen competition, allowing only the most productive to survive) and agglomeration economies (larger cities promote … larger cities left-truncates the productivity distribution whereas stronger agglomeration right-shifts and dilates the …

cities between 1970 and 1990. …

examine net migration rates for a sample of 171 medium and large cities for the period 1960 through 2002. We conclude that … unrestricted cities. This pattern seemingly came to an end in the late 1990s. …

largest US cities in the period 1990-2009. As a result of technological change some tasks can be placed at distance, while … proximity relative to others. Our results suggest that cities with higher shares of connected tasks experienced higher … the complementarity between skills and cities. …

economic crisis that began in 2008. It starts from the observation that the decline in employment and rise in unemployment in … arrangements in place before the crisis and discretionary reforms implemented during the crisis. Emphasis is placed on the role of … internal flexibility. At the same time, however, it appears that the crisis has – at least in some cases – contributed to a …