We estimate differences in innovation behavior between foreign versus U.S.-born entrepreneurs in high-tech industries. Our data come from the Annual Survey of Entrepreneurs, a random sample of firms with detailed information on owner characteristics and innovation activities. We find uniformly...

Analyzing data on all U.S. employers in a cohort of entering firms, we document a highly skewed size distribution, such that the largest 5% account for over half of cohort employment at firm birth and more than two-thirds at firm age 7. Little of the size variation is accounted for by industry...

This paper exploits the rapid rise in self-employment rates in post-communist Eastern Europe as a valuable "quasi-experiment" for understanding the sources of entrepreneurship. A relative demand-supply model and an individual sectoral choice model are used to analyze a 1993 survey of 27,000...