Using the 2003 National Survey of College Graduates, I examine how immigrants perform relative to natives in activities likely to increase U.S. productivity, according to the type of visa on which they first entered the United States. Immigrants who first entered on a student/trainee visa or a...

This paper develops a model to analyse the implications of firing costs on incentives for R&D and international specialization. The key idea is that, to avoid paying firing costs, the country with a rigid labour market will tend to produce relatively secure goods, at late stages in their product...

We study the effect of culture on important economic outcomes by using the 1970 Census to examine the work and fertility behaviour of women 30-40 years old, born in the US, but whose parents were born elsewhere. We use past female labour force participation and total fertility rates from the...

We present a model in which workers have to be educated to get employed and firms have to innovate in order to increase productivity. Education as well as innovation and production require skilled labour as inputs. This and the fact that learning opportunities differ across workers determine...

We use the fall of the Berlin Wall in 1989 to show that personal relationships which individuals maintain for non-economic reasons can be an important determinant of regional economic growth. We show that West German households who have social ties to East Germany in 1989 experience a persistent...

Empirical studies in the migration literature have shown that migration enclaves (networks) negatively affect the language proficiency of migrants. These studies, however, ignore the choice of location as a function of language skills. Using data on Mexican migration to the US, we show that...

We measure the extent to which skilled immigrants increase innovation in the United States by exploring individual patenting behavior as well as state-level determinants of patenting. The 2003 National Survey of College Graduates shows that immigrants patent at double the native rate, and that...

This Paper addresses the question: why and where do immigrants cluster? We examine the relative importance and interaction of two alternative explanations of immigrant clustering: (1) network externalities and (2) herd behavior. We advance the theory by presenting a framework encompassing both...

The willingness to migrate and locational choice may be influenced by others’ choices or plans, particularly if the ‘other people’, such as family and friends, are migrants, former migrants, or potential migrants themselves. We examine the roles ‘other people’ play in influencing an...

We develop a theory of innovation for entry and sale into oligopoly, and show that an invention of higher quality is more likely to be sold (or licensed) to an incumbent due to strategic product market effects on the sales price. Preemptive acquisitions by incumbents are shown to stimulate the...