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Scientific Networks and Co-authorship

  • Marcel Fafchamps
  • Marco J. van der Leij

Using a database of all published articles in economic journals over the last 30 years, we investigate the determinants of scientific co-authorship. We find that, controlling for pair-wise fixed effects and author productivity, a new collaboration emerges faster if the two authors are more closely connected, either directly or indirectly, through collaborations with others. This effect is strong and robust. It is consistent with a referral model of the formation of scientific collaborations. We also find that large differences in research output between authors favor co-authorship, suggesting that scientific collaboration is more likely between authors with dissimilar ability and experience. This effect disappears if we limit the data to highly productive authors.

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File URL: http://www.economics.ox.ac.uk/materials/working_papers/paper256.pdf
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Paper provided by University of Oxford, Department of Economics in its series Economics Series Working Papers with number 256.

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Date of creation: 01 Feb 2006
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Handle: RePEc:oxf:wpaper:256
Contact details of provider: Postal: Manor Rd. Building, Oxford, OX1 3UQ
Web page: http://www.economics.ox.ac.uk/
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  1. Kaivan Munshi, 2003. "Networks In The Modern Economy: Mexican Migrants In The U.S. Labor Market," The Quarterly Journal of Economics, MIT Press, vol. 118(2), pages 549-599, May.
  2. McMillan, John & Woodruff, Christopher, 1998. "Inter-Firm Relationships and Informal Credit in Vietnam," CEPR Discussion Papers 2036, C.E.P.R. Discussion Papers.
  3. Sanjeev Goyal & Marco J. van der Leij & Jos� Luis Moraga-Gonzalez, 2006. "Economics: An Emerging Small World," Journal of Political Economy, University of Chicago Press, vol. 114(2), pages 403-432, April.
  4. Simon Johnson & John McMillan, 2002. "Courts and Relational Contracts," Journal of Law, Economics and Organization, Oxford University Press, vol. 18(1), pages 221-277, April.
  5. Paul Romer, 1989. "Endogenous Technological Change," NBER Working Papers 3210, National Bureau of Economic Research, Inc.
  6. Stefan Dercon & Joachim de Weerdt, 2004. "Risk-Sharing Networks And Insurance Against Illness," Development and Comp Systems 0409019, EconWPA.
  7. Marco van der Leij & Sanjeev Goyal, 2006. "Strong Ties in a Small World," Tinbergen Institute Discussion Papers 06-008/1, Tinbergen Institute.
  8. Marcel Fafchamps, 2004. "Market Institutions in Sub-Saharan Africa: Theory and Evidence," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262062364, June.
  9. Philippe Aghion & Peter Howitt, 1990. "A Model of Growth Through Creative Destruction," NBER Working Papers 3223, National Bureau of Economic Research, Inc.
  10. Fafchamps Marcel, 2002. "Spontaneous Market Emergence," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 2(1), pages 1-37, June.
  11. Garance Genicot & Debraj Ray, 2003. "Group Formation in Risk--Sharing Arrangements," Review of Economic Studies, Wiley Blackwell, vol. 70(1), pages 87-113, January.
  12. Marcel Fafchamps, 2002. "Returns to social network capital among traders," Oxford Economic Papers, Oxford University Press, vol. 54(2), pages 173-206, April.
  13. Kranton, Rachel E, 1996. "Reciprocal Exchange: A Self-Sustaining System," American Economic Review, American Economic Association, vol. 86(4), pages 830-51, September.
  14. Marcel Fafchamps & Bart Minten, 2001. "Social Capital and Agricultural Trade," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 83(3), pages 680-685.
  15. Paul Oyer, 2006. "The Macro-Foundations of Microeconomics: Initial Labor Market Conditions and Long-Term Outcomes for Economists," NBER Working Papers 12157, National Bureau of Economic Research, Inc.
  16. Marcel Fafchamps & Susan Lund, . "Risk Sharing Networks in Rural Philippines," Working Papers 97014, Stanford University, Department of Economics.
  17. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth Through Creative Destruction," Scholarly Articles 12490578, Harvard University Department of Economics.
  18. Greif, Avner, 1993. "Contract Enforceability and Economic Institutions in Early Trade: the Maghribi Traders' Coalition," American Economic Review, American Economic Association, vol. 83(3), pages 525-48, June.
  19. Rachel E. Kranton & Deborah F. Minehart, 2001. "A Theory of Buyer-Seller Networks," American Economic Review, American Economic Association, vol. 91(3), pages 485-508, June.
  20. Montgomery, James D, 1991. "Social Networks and Labor-Market Outcomes: Toward an Economic Analysis," American Economic Review, American Economic Association, vol. 81(5), pages 1407-18, December.
  21. Fisman Raymond J, 2003. "Ethnic Ties and the Provision of Credit: Relationship-Level Evidence from African Firms," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 3(1), pages 1-21, October.
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