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Superstar Extinction

Author(s)
Azoulay, Pierre; Wang, Jialan; Graff Zivin, Joshua S.
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Abstract
We estimate the magnitude of spillovers generated by 112 academic “superstars” who died prematurely and unexpectedly, thus providing an exogenous source of variation in the structure of their collaborators’ coauthorship networks. Following the death of a superstar, we find that collaborators experience, on average, a lasting 5% to 8% decline in their quality-adjusted publication rates. By exploring interactions of the treatment effect with a variety of star, coauthor, and star/coauthor dyad characteristics, we seek to adjudicate between plausible mechanisms that might explain this finding. Taken together, our results suggest that spillovers are circumscribed in idea space, but less so in physical or social space. In particular, superstar extinction reveals the boundaries of the scientific field to which the star contributes—the “invisible college.”
Date issued
2010-05
URI
http://hdl.handle.net/1721.1/58802
Department
Sloan School of Management
Journal
Quarterly Journal of Economics
Publisher
MIT Press
Citation
Azoulay, Pierre, Joshua S. Graff Zivin, and Jialan Wang. “Superstar Extinction.” Quarterly Journal of Economics 125.2 (2010): 549-589. © 2010 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology.
Version: Final published version
ISSN
0033-5533
1531-4650

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