Social interactions and complex networks
This paper studies the impact of interaction topologies on individual and aggregate behavior in environments with social interactions. We study social interaction games of an infnitely large population with local and global externalities. Local externalities are limited within agents' ego-networks while the global externality is derived from aggregate distribution in a feedback manner. We consider two forms of heterogeneity, that due to individual intrinsic tastes and that due to ego-networks. The agents know the potential number of other agents they will interact with but do not posses complete information about their neighbors' types and strategies so they base their decisions on expectations and beliefs. We characterize the existence, uniqueness and multiplicity of equilibrium distribution of strategies. By considering arbitrary interaction topologies, we show that the interaction structure greatly determines the uniqueness and multiplicity of equilibrium outcomes, as well as the equilibrium aggregate distribution of strategies as measured by the mean strategy.
|Date of creation:||2012|
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- Andrea Galeotti & Sanjeev Goyal & Matthew O. Jackson & Fernando Vega-Redondo & Leeat Yariv, 2008.
Economics Working Papers
ECO2008/07, European University Institute.
- Bramoulle, Yann & Kranton, Rachel, 2007. "Public goods in networks," Journal of Economic Theory, Elsevier, vol. 135(1), pages 478-494, July.
- repec:att:wimass:9617 is not listed on IDEAS
- Daron Acemoglu & Munther A. Dahleh & Ilan Lobel & Asuman Ozdaglar, 2008.
"Bayesian Learning in Social Networks,"
NBER Working Papers
14040, National Bureau of Economic Research, Inc.
- Brock, William A & Durlauf, Steven N, 2001.
"Discrete Choice with Social Interactions,"
Review of Economic Studies,
Wiley Blackwell, vol. 68(2), pages 235-60, April.
- Ellison, Glenn, 1993.
"Learning, Local Interaction, and Coordination,"
Econometric Society, vol. 61(5), pages 1047-71, September.
- Blume Lawrence E., 1993.
"The Statistical Mechanics of Strategic Interaction,"
Games and Economic Behavior,
Elsevier, vol. 5(3), pages 387-424, July.
- L. Blume, 2010. "The Statistical Mechanics of Strategic Interaction," Levine's Working Paper Archive 488, David K. Levine.
- Jones, Andrew M., 1994. "Health, addiction, social interaction and the decision to quit smoking," Journal of Health Economics, Elsevier, vol. 13(1), pages 93-110, March.
- Andrea Galeotti & Fernando Vega‐Redondo, 2011. "Complex networks and local externalities: A strategic approach," International Journal of Economic Theory, The International Society for Economic Theory, vol. 7(1), pages 77-92, 03.
- Akerlof, George A & Yellen, Janet L & Katz, Michael L, 1996. "An Analysis of Out-of-Wedlock Childbearing in the United States," The Quarterly Journal of Economics, MIT Press, vol. 111(2), pages 277-317, May.
- Young, H Peyton, 1993. "The Evolution of Conventions," Econometrica, Econometric Society, vol. 61(1), pages 57-84, January.
- Topa, Giorgio, 2001.
"Social Interactions, Local Spillovers and Unemployment,"
Review of Economic Studies,
Wiley Blackwell, vol. 68(2), pages 261-95, April.
- Topa, Giorgio, 1997. "Social Interactions, Local Spillovers and Unemployment," Working Papers 97-17, C.V. Starr Center for Applied Economics, New York University.
- repec:att:wimass:9707 is not listed on IDEAS
- U. Horst & Jose A. Scheinkman, 2010.
"Equilibria in Systems of Social Interactions,"
Levine's Working Paper Archive
506439000000000119, David K. Levine.
- William A. Brock & Steven N. Durlauf, 1999.
"A formal model of theory choice in science,"
Springer, vol. 14(1), pages 113-130.
- Casey B. Mulligan, 1998. "Pecuniary Incentives to Work in the United States during World War II," Journal of Political Economy, University of Chicago Press, vol. 106(5), pages 1033-1077, October.
- Cowan Robin & Cowan William, 1998. "Technological Standardization with and without Borders in an Interacting Agents Model," Research Memorandum 015, Maastricht University, Maastricht Economic Research Institute on Innovation and Technology (MERIT).
- repec:cup:cbooks:9780521674096 is not listed on IDEAS
- Steven N. Durlauf, 1996.
"Statistical Mechanics Approaches to Socioeconomic Behavior,"
96-08-069, Santa Fe Institute.
- Steven N. Durlauf, 1996. "Statistical Mechanics Approaches to Socioeconomic Behavior," NBER Technical Working Papers 0203, National Bureau of Economic Research, Inc.
- repec:cup:cbooks:9780521857406 is not listed on IDEAS
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