location, which has been taken as evidence of geographically localized knowledge spillovers. In this study, we find that patent … in question, which we interpret as evidence of a significant role played by social capital in promoting knowledge … find strong evidence in support of the enduring social capital hypothesis; social ties that facilitate knowledge transfer …

change and innovation has radically changed the living standards of the citizens of the US in the past 150 years. Lying … the presence of post offices in a county, on innovation. We show that between 1804 and 1899, the time when the US became …

innovations—innovations that break new ground in terms of knowledge creation. After presenting a motivating model focusing on the … choice between incremental and radical innovation, and on how managers of different ages and human capital are sorted across … consistent with this pattern. Our measures of creative innovations proxy for innovation quality (average number of citations per …

innovations-innovations that break new ground in terms of knowledge creation. After presenting a motivating model focusing on the … choice between incremental and radical innovation, and on how managers of different ages and human capital are sorted across … measures of creative innovations proxy for innovation quality (average number of citations per patent) and creativity (fraction …

The development prospects of a poor country depend in part on its capacity for innovation. The productivity of its … innovators depends in turn on their access to technological knowledge. The emigration of highly skilled individuals weakens local … knowledge networks (brain drain), but may also help remaining innovators access valuable knowledge accumulated abroad (brain …

This paper studies a simple model of experimentation and innovation. Our analysis suggests that patents may improve the … allocation of resources by encouraging rapid experimentation and efficient ex post transfer of knowledge across firms. Each firm … project to implement. A successful innovation can be copied by other firms. Symmetric equilibria (where actions do not depend …