An Economic Model of Friendship: Homophily, Minorities and Segregation
We develop a model of friendship formation that sheds light on segregation patterns observed in social and economic networks. Individuals come in different types and have type-dependent benefits from friendships; we examine the properties of a steady-state equilibrium of a matching process of friendship formation. We use the model to understand three empirical patterns of friendship formation: (i) larger groups tend to form more same-type ties and fewer other-type ties than small groups, (ii) larger groups form more ties per capita, and (iii) all groups are biased towards same-type relative to demographics, with the most extreme bias coming from middle-sized groups. We trace each of these empirical observations to specific properties of the theoretical model and highlight the role of choice and chance in generating homophilous behavior. Finally we discuss welfare implications of the model.
|Date of creation:||2007|
|Date of revision:|
|Contact details of provider:|| Postal: Cannaregio, S. Giobbe no 873 , 30121 Venezia|
Web page: http://www.unive.it/dip.economia
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Alison Watts, 2006. "Formation of Segregated and Integrated Groups," Working Papers 2006.127, Fondazione Eni Enrico Mattei.
- Scott E. Page, 2007.
"Prologue to The Difference: How the Power of Diversity Creates Better Groups, Firms, Schools, and Societies
[The Difference: How the Power of Diversity Creates Better Groups, Firms, Schools, and So," Introductory Chapters, Princeton University Press.
- Friedman, James W, 1973. "Concavity of Production Functions and Non-Increasing Returns to Scale," Econometrica, Econometric Society, vol. 41(5), pages 981-84, September.
- K. R. Narayanan, 1954. "Freedom in Modern Society," India Quarterly: A Journal of International Affairs, , vol. 10(4), pages 376-381, October.
- Dale T. Mortensen & Christopher A. Pissarides, 1994.
"Job Creation and Job Destruction in the Theory of Unemployment,"
Review of Economic Studies,
Oxford University Press, vol. 61(3), pages 397-415.
- Mortensen, Dale & Pissarides, Christopher, 2011. "Job Creation and Job Destruction in the Theory of Unemployment," Economic Policy, Russian Presidential Academy of National Economy and Public Administration, vol. 1, pages 19 pages.
- Dale T. Mortensen & Christopher A. Pissarides, 1993. "Job Creation and Job Destruction in the Theory of Unemployment," CEP Discussion Papers dp0110, Centre for Economic Performance, LSE.
When requesting a correction, please mention this item's handle: RePEc:ven:wpaper:2007_20. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Geraldine Ludbrook)
If references are entirely missing, you can add them using this form.