This paper addresses the issue of technogenesis and its geographical pattern. It aims to offer both a general analysis framework and a test on innovation data from several European cities. This framework is mainly built on the product life-cycle and the incubation approach. On the basis of this...

We develop a heterogeneous agent, overlapping generations model with nonhomothetic preferences that nests several explanations for the decline in the natural rate of interest (r*) suggested in the literature: demographic change, a slowdown in productivity growth, a rise in income inequality, and...

The 1996 PRWORA reform introduced time limits on the receipt of welfare in the United States. We use variation by state and across demographic groups to provide reduced form evidence showing that such limits led to a fall in welfare claims (partly due to "banking" benefi ts for future use), a...

Are households more likely to be homeowners when “housing risk” is higher? We show that home-ownership rates and loan-to-value (LTV ) ratios at the city level are strongly negatively correlated with local house price volatility. However, causal inference is confounded by house price levels,...