Strong ties in a small world
This paper examines the celebrated "Strength of weak ties" theory of Granovetter(1973). We formalize the theory in terms of two hypotheses: one, for any threeplayers with two links present, the probability of a third link being present isincreasing in the strength of the two ties, and two, the removal of a weak tieincreases average distance in the network more than the removal of a strong tie. We test these hypotheses using data on the network of coauthorship amongeconomists. We find support for the hypothesis of transitivity of strong ties, but we reject thehypothesis that weak ties reduce distance more than strong ties do. We then identify two general features of networks which explain these findings:significant inequality in the distribution of connections across individuals andstronger ties among individuals who have more connections.
|Date of creation:||Jan 2010|
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|Publication status:||Published by Ivie|
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- 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.
- Sanjeev Goyal & Marco van der Leij & José Luis Moraga-Gonzàlez, 2004. "Economics: An Emerging Small World?," Working Papers 2004.84, Fondazione Eni Enrico Mattei.
- Sanjeev Goyal & Marco van der Leij & José Luis Moraga Gonzales, 2004. "Economics: An Emerging Small World?," CESifo Working Paper Series 1287, CESifo Group Munich.
- Matt Jackson, 2003.
"The Effects of Social Networks on Employment and Inequality,"
Theory workshop papers
658612000000000032, UCLA Department of Economics.
- Antoni Calvó-Armengol & Matthew O. Jackson, 2004. "The Effects of Social Networks on Employment and Inequality," American Economic Review, American Economic Association, vol. 94(3), pages 426-454, June.
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