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Social Networks

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Author Info

  • de Martí, Joan

    ()
    (Universitat Pompeu Fabra)

  • Zenou, Yves

    ()
    (Stockholm University)

Abstract

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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Bibliographic Info

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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Keywords: random graph; game theory; centrality measures; network formation; weak and strong ties;

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Citations

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Cited by:
  1. Marco Mantovani & Georg Kirchsteiger & Ana Mauleon & Vincent Vannetelbosch, 2011. "Myopic or Farsighted? An Experiment on Network Formation," Working Papers, Fondazione Eni Enrico Mattei 2011.45, Fondazione Eni Enrico Mattei.
  2. Quentin David & Alexandre Janiak & Etienne Wasmer, 2008. "Local social capital and geographical mobility. A theory," Documentos de Trabajo, Centro de Economía Aplicada, Universidad de Chile 248, Centro de Economía Aplicada, Universidad de Chile.
  3. Lee, Lung-Fei & Liu, Xiaodong & Patacchini, Eleonora & Zenou, Yves, 2012. "Criminal Networks: Who is the Key Player?," CEPR Discussion Papers, C.E.P.R. Discussion Papers 8772, C.E.P.R. Discussion Papers.
  4. Francis Bloch & Nicolas Quérou, 2008. "Pricing in networks," Working Papers, HAL hal-00356356, HAL.
  5. Davezies, Laurent & d'Haultfoeuille, Xavier & Fougère, Denis, 2006. "Identification of Peer Effects Using Group Size Variation," IZA Discussion Papers 2324, Institute for the Study of Labor (IZA).
  6. Machikita, Tomohiro, 2006. "Are Job Networks Localized in a Developing Economy? Search Methods for Displaced Workers in Thailand," IDE Discussion Papers, Institute of Developing Economies, Japan External Trade Organization(JETRO) 84, Institute of Developing Economies, Japan External Trade Organization(JETRO).
  7. Marcela Ibáñez, 2010. "Who crops coca and why? The case of Colombian farmers," Courant Research Centre: Poverty, Equity and Growth - Discussion Papers 40, Courant Research Centre PEG.
  8. Michele Pellizzari, 2004. "Do Friends and Relatives Really Help in Getting a Good Job?," CEP Discussion Papers, Centre for Economic Performance, LSE dp0623, Centre for Economic Performance, LSE.
  9. Alexandre Janiak & Quentin David & Etienne Wasmer, 2008. "Local Social Capital and Geographical Mobility: Some Empirics and a Conjecture on the Nature of European Unemployment," Sciences Po publications 3669, Sciences Po.

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