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Strategic Interaction and Networks

  • Yann Bramoull?
  • Rachel Kranton
  • Martin D'Amours

Geography and social links shape economic interactions. In industries, schools, and markets, the entire network determines outcomes. This paper analyzes a large class of games and obtains a striking result. Equilibria depend on a single network measure: the lowest eigenvalue. This paper is the first to uncover the importance of the lowest eigenvalue to economic and social outcomes. It captures how much the network amplifies agents' actions. The paper combines new tools?potential games, optimization, and spectral graph theory?to solve for all Nash and stable equilibria and applies the results to R&D, crime, and the econometrics of peer effects.

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Article provided by American Economic Association in its journal American Economic Review.

Volume (Year): 104 (2014)
Issue (Month): 3 (March)
Pages: 898-930

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Handle: RePEc:aea:aecrev:v:104:y:2014:i:3:p:898-930
Note: DOI: 10.1257/aer.104.3.898
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  1. Gary S. Becker, 1974. "Crime and Punishment: An Economic Approach," NBER Chapters, in: Essays in the Economics of Crime and Punishment, pages 1-54 National Bureau of Economic Research, Inc.
  2. Bloch, Francis & Zenginobuz, Unal, 2004. "The Effect of Spillovers on the Provision of Local Public Goods," MPRA Paper 186, University Library of Munich, Germany, revised 05 Oct 2006.
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  4. Jaffe, Adam B & Trajtenberg, Manuel & Henderson, Rebecca, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 577-98, August.
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  7. Yann Bramoull? & Rachel Kranton & Martin D'Amours, 2014. "Strategic Interaction and Networks," American Economic Review, American Economic Association, vol. 104(3), pages 898-930, March.
  8. Trogdon, Justin G. & Nonnemaker, James & Pais, Joanne, 2008. "Peer effects in adolescent overweight," Journal of Health Economics, Elsevier, vol. 27(5), pages 1388-1399, September.
  9. Alejandro Gaviria & Steven Raphael, 2001. "School-Based Peer Effects And Juvenile Behavior," The Review of Economics and Statistics, MIT Press, vol. 83(2), pages 257-268, May.
  10. Patrick Bayer & Randi Hjalmarsson & David Pozen, 2007. "Building Criminal Capital behind Bars: Peer Effects in Juvenile Corrections," NBER Working Papers 12932, National Bureau of Economic Research, Inc.
  11. Timothy G. Conley & Christopher R. Udry, 2005. "Learning about a new technology: pineapple in Ghana," Proceedings, Federal Reserve Bank of San Francisco.
  12. Rauch, J E & Casella, Alessandra, 2001. "Overcoming Informational Barriers to International Resource Allocation: Prices and Ties," University of California at San Diego, Economics Working Paper Series qt2k8626fr, Department of Economics, UC San Diego.
  13. James D. Adams, 2002. "Comparative localization of academic and industrial spillovers," Journal of Economic Geography, Oxford University Press, vol. 2(3), pages 253-278, July.
  14. Mohamed Belhaj & Yann Bramoullé & Frédéric Deroian, 2012. "Network Games under Strategic Complementarities," AMSE Working Papers 1225, Aix-Marseille School of Economics, Marseille, France.
  15. Daiji Kawaguchi, 2002. "Peer Effects on Substance Use among American Teenagers," ISER Discussion Paper 0567, Institute of Social and Economic Research, Osaka University.
  16. David Card & Laura Giuliano, 2011. "Peer Effects and Multiple Equilibria in the Risky Behavior of Friends," NBER Working Papers 17088, National Bureau of Economic Research, Inc.
  17. Kooreman, P. & Soetevent, A., 2007. "A discrete choice model with social interactions; with an application to high school teen behavior," Other publications TiSEM 39fff234-271a-4058-9912-7, Tilburg University, School of Economics and Management.
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