Regional creative resources include inventors. Policies conducive to inventors’ productivity or attracting productive inventors promote regional development. We build on prior work on inventor mobility and productivity, analyzing German, French and British patents filed in the US by 7,500...

We provide a framework for understanding the causes and consequences of the observed shapes of the distributions of individual inventors' productivities. We review a literature that begins with Lotka's (1926) "law" regarding the persistence of variability in scientific productivity at any point...

This paper deals with the effects of the geographic concentration of economic activity on productivity through agglomeration economies in the U.S. economy. Our empirical study extends the literature on agglomeration economies in two directions. First we measure and compare the effects on...

A growing body empirical literature deals with persistence in innovation. However, there is neither a survey of the development and status of the field nor a clear statement of a theory of persistence which includes a formal model of the dynamics of firm persistence. This paper fills these gaps...