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Social Networks and Crime Decisions: The Role of Social Structure in Facilitating Delinquent Behaviour

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Author Info
Calvó-Armengol, Antoni
Zenou, Yves

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Abstract

We develop a model in which delinquents compete with each other in criminal activities but may benefit from being friends with other criminals (by learning and acquiring proper know-how in the crime business). We first study the Nash equilibrium of this game by taking the social network connecting agents as given. We show that this game always has a pure strategy Nash equilibrium for generic values of the parameters. Ex ante identical individuals connected through a network can end up with very different equilibrium outcomes: either employed, or isolated criminal or criminals in networks. We also show that multiple equilibria with different number of active criminals and levels of involvement in crime activities may coexist and are only driven by the geometry of the pattern of links connecting criminals. We then consider a two-stage network formation and crime decisions game. We show that the multiplicity of equilibrium outcomes holds even when we allow for endogenous network formation.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 3966.

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Date of creation: Jul 2003
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Handle: RePEc:cpr:ceprdp:3966

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Related research
Keywords: crime; multiple equilibria; social networks; strategic interactions;

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Find related papers by JEL classification:
C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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    Other versions:
  2. Calvo-Armengol, Antoni & Jackson, Matthew O., 2005. "Networks in labor markets: Wage & employment dynamics & inequality," Working Papers 1213, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
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  4. Jens Ludwig & Greg J. Duncan & Paul Hirschfield, 2001. "Urban Poverty And Juvenile Crime: Evidence From A Randomized Housing-Mobility Experiment," The Quarterly Journal of Economics, MIT Press, vol. 116(2), pages 655-679, May. [Downloadable!] (restricted)
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    Other versions:
  6. Thierry Verdier & Yves Zenou, 2004. "Racial Beliefs, Location, And The Causes Of Crime," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 45(3), pages 731-760, 08. [Downloadable!] (restricted)
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  7. Patrick Bayer & Randi Pintoff & David E. Pozen, 2003. "Building Criminal Capital Behind Bars: Social Learning in Juvenile Corrections," Working Papers 864, Economic Growth Center, Yale University. [Downloadable!]
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  9. Glaeser, Edward L & Sacerdote, Bruce & Scheinkman, Jose A, 1996. "Crime and Social Interactions," The Quarterly Journal of Economics, MIT Press, vol. 111(2), pages 507-48, May. [Downloadable!] (restricted)
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  11. Antoni Calvo-Armengol & Matthew O. Jackson, 2002. "Social Networks in Determining Employment and Wages: Patterns, Dynamics, and Inequality," Microeconomics 0211007, EconWPA. [Downloadable!]
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  12. Chien-Chieh Huang & Derek Laing & Ping Wang, 2004. "Crime And Poverty: A Search-Theoretic Approach," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 45(3), pages 909-938, 08. [Downloadable!] (restricted)
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  14. Calvó-Armengol, Antoni & Verdier, Thierry & Zenou, Yves, 2006. "Strong and Weak Ties in Employment and Crime," CEPR Discussion Papers 5448, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    Other versions:
  15. Anne C. Case & Lawrence F. Katz, 1991. "The Company You Keep: The Effects of Family and Neighborhood on Disad- vantaged Youths," NBER Working Papers 3705, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  17. Lochner, L., 1999. "Education, Work, and Crime: Theory and Evidence," RCER Working Papers 465, University of Rochester - Center for Economic Research (RCER). [Downloadable!]
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  19. Jackson, Matthew O. & Wolinsky, Asher, 1996. "A Strategic Model of Social and Economic Networks," Journal of Economic Theory, Elsevier, vol. 71(1), pages 44-74, October. [Downloadable!] (restricted)
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  20. Matt Jackson, 2003. "The Effects of Social Networks on Employment and Inequality," Theory workshop papers 658612000000000032, UCLA Department of Economics. [Downloadable!]
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  21. Sah, Raaj K, 1991. "Social Osmosis and Patterns of Crime," Journal of Political Economy, University of Chicago Press, vol. 99(6), pages 1272-95, December. [Downloadable!] (restricted)
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