Learn More
—Analysis of patent citations is a core methodology in the study of knowledge diffusion. However, citations made by patent examiners have not been separately reported, adding unknown noise to the data. We leverage a recent change in the reporting of patent data showing citations added by examiners. The magnitude is high: two-thirds of citations on the(More)
T o what extent do firms go abroad to access technology available in other locations? This paper examines whether and when state technical capabilities attract foreign investment in manufacturing from 1987-1993. We find that on average state R&D intensity does not attract foreign direct investment. Most investing firms are in lower-tech industries and(More)
Working papers are in draft form. This working paper is distributed for purposes of comment and discussion only. It may not be reproduced without permission of the copyright holder. Copies of working papers are available from the author. Abstract We explore the impact of geographically bounded intra-firm spillovers (internal agglomeration economies) and(More)
Working papers are in draft form. This working paper is distributed for purposes of comment and discussion only. It may not be reproduced without permission of the copyright holder. Copies of working papers are available from the author. Abstract Learning processes lie at the heart of our understanding of how firms build capabilities to generate and sustain(More)
Platforms have evolved beyond just being organized as multi-sided markets with complementors selling to users. Complementors are often unpaid, working outside of a price system and driven by heterogeneous sources of motivation—which should affect how they respond to platform growth. Does reliance on network effects and strategies to attract large numbers of(More)
This study looks at the role of internal linkages in highly competitive clusters. Besides serving as a mechanism to source knowledge, we argue that strong internal linkages also represent tighter control over local innovation and higher levels of technological interdependency across locations, which allow firms to increase internalization and reduce the(More)
Working papers are in draft form. This working paper is distributed for purposes of comment and discussion only. It may not be reproduced without permission of the copyright holder. Copies of working papers are available from the author. Abstract We explore the impact of geographically bounded, intra-firm linkages (internal agglomerations) and(More)