This paper explores the effects of distance as well as subnational and national borders on international and intranational knowledge spillovers through patent citations across the 39 most patent-cited countries and 319 metropolitan statistical areas (MSAs) within the U.S. In contrast to previous...

Recent studies in international trade report that new exporters often start selling small amounts and cease exporting in the first year. These findings re.ect a substantial amount of uncertainty facing new exporters. In this paper we study whether export activities in the neighborhood reveal...

This paper explores the consequences of grouping workers into diverse divisions on the performance of employees using a dataset containing the detailed personnel records of a large U.S. firm from 1989-1994. In particular, I examine the effects of demographic dissimilarity among co-workers,...