Peer Effects and Social Networks in Education and Crime

41 Pages Posted: 24 Oct 2005

See all articles by Antoni Calvo-Armengol

Antoni Calvo-Armengol

Autonomous University of Barcelona - Department of Economics; IZA Institute of Labor Economics

Eleonora Patacchini

Einaudi Institute for Economics and Finance (EIEF) ; IZA Institute of Labor Economics

Yves Zenou

Monash University - Department of Economics; Stockholm University; Research Institute of Industrial Economics (IUI); IZA Institute of Labor Economics; Centre for Economic Policy Research (CEPR)

Date Written: September 2005

Abstract

This paper studies whether structural properties of friendship networks affect individual outcomes in education and crime. We first develop a model that shows that, at the Nash equilibrium, the outcome of each individual embedded in a network is proportional to her Bonacich centrality measure. This measure takes into account both direct and indirect friends of each individual but puts less weight on her distant friends. Using a very detailed dataset of adolescent friendship networks, we show that, after controlling for observable individual characteristics and unobservable network specific factors, the individual's position in a network (as measured by her Bonacich centrality) is a key determinant of her level of activity. A standard deviation increase in the Bonacich centrality increases the level of individual delinquency by 45% of one standard deviation and the pupil school performance by 34% of one standard deviation.

Keywords: Centrality measure, peer influence, network structure, delinquency, school performance

JEL Classification: A14, I21, K42

Suggested Citation

Calvo-Armengol, Antoni and Patacchini, Eleonora and Zenou, Yves, Peer Effects and Social Networks in Education and Crime (September 2005). CEPR Discussion Paper No. 5244. Available at SSRN: https://ssrn.com/abstract=834645

Antoni Calvo-Armengol

Autonomous University of Barcelona - Department of Economics ( email )

Campus Bellaterra
Barcelona, 08193
Spain
+34 93 581 3068 (Phone)

IZA Institute of Labor Economics

P.O. Box 7240
Bonn, D-53072
Germany

Eleonora Patacchini

Einaudi Institute for Economics and Finance (EIEF) ( email )

Via Due Macelli, 73
Rome, 00187
Italy

IZA Institute of Labor Economics ( email )

P.O. Box 7240
Bonn, D-53072
Germany

Yves Zenou (Contact Author)

Monash University - Department of Economics ( email )

Australia

Stockholm University ( email )

Universitetsvägen 10
Stockholm, Stockholm SE-106 91
Sweden

Research Institute of Industrial Economics (IUI) ( email )

P.O. Box 5501
S-114 85 Stockholm
Sweden

IZA Institute of Labor Economics

P.O. Box 7240
Bonn, D-53072
Germany

Centre for Economic Policy Research (CEPR)

London
United Kingdom

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