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Influence Networks

Author

Listed:
  • Dunia López-Pintado

    () (Department of Economics, Universidad Pablo de Olavide and CORE, Université Catholique de Louvain)

Abstract

Some behaviors, ideas or technologies spread and become persistent in society, whereas others vanish. This paper analyzes the role of social influence in determining such distinct collective outcomes. Agents are assumed to acquire information from others through a certain sampling process that generates an influence network and use simple rules to decide whether to adopt or not depending on the observed sample. The diffusion threshold (i.e., the spreading rate above which the behavior becomes persistent in the population) and the endemic state (i.e., the fraction of adopters in the stationary state of the dynamics) are characterized as a function of the primitives of the model. The results highlight the importance of the correlation between visibility and connectivity (or degree) for diffusion purposes.

Suggested Citation

  • Dunia López-Pintado, 2010. "Influence Networks," Working Papers 10.06, Universidad Pablo de Olavide, Department of Economics.
  • Handle: RePEc:pab:wpaper:10.06
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    File URL: http://www.upo.es/serv/bib/wps/econ1006.pdf
    File Function: First version, 2010
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    More about this item

    Keywords

    social influence; networks; diffusion threshold; endemic state.;

    JEL classification:

    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes

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