U.S. High Technology Clusters

It is well known that both "Silicon Valley" and "Route 128 Boston" owe much of their success ot the proximity of Stanford University and MIT. Knowledge spillovers from large research universities contribute to increasing returns, resulting in divergent development between clusters. This divergent growth has led ot the implementation of regional technology policies to close the gap. The purpose of this paper is to evaluate the growth of high technology clusters in the U.S.