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Social Networks

  • de Martí, Joan


    (Universitat Pompeu Fabra)

  • Zenou, Yves


    (Stockholm University)

We survey the literature on social networks by putting together the economics, sociological and physics/applied mathematics approaches, showing their similarities and differences. We expose, in particular, the two main ways of modeling network formation. While the physics/applied mathematics approach is capable of reproducing most observed networks, it does not explain why they emerge. On the contrary, the economics approach is very precise in explaining why networks emerge but does a poor job in matching real-world networks. We also analyze behaviors on networks, which take networks as given and focus on the impact of their structure on individuals’ outcomes. Using a game-theoretical framework, we then compare the results with those obtained in sociology.

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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 4621.

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Length: 33 pages
Date of creation: Dec 2009
Date of revision:
Publication status: published in: Ian Jarvie and Jesus Zamora-Bonilla (eds.), The SAGE Handbook of the Philosophy of Social Science, London: Sage Publications, 2011.
Handle: RePEc:iza:izadps:dp4621
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