What is a peer? The role of network definitions in estimation of endogenous peer effects
AbstractWe employ a standard identification strategy from the peer effects literature to investigate the importance of network definitions in estimation of endogenous peer effects. We use detailed information on friends in the National Longitudinal Study of Adolescent Health Survey (Add Health) to construct two network definitions that are less ad hoc than the school-grade cohorts commonly used in the educational peer effects literature. We demonstrate that accurate definitions of the network seriously impact estimation of peer effects. In particular, we show that peer effects estimates on educational achievement, smoking and drinking are substantially larger with our more detailed measures than with the school-grade cohorts. These results highlight the need to further understand how friendships form in order to fully understand implications for policy that alters the peer group mix at the classroom or cohort level.
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Bibliographic InfoArticle provided by Taylor & Francis Journals in its journal Applied Economics.
Volume (Year): 44 (2012)
Issue (Month): 3 (January)
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Web page: http://www.tandfonline.com/RAEC20
Other versions of this item:
- Halliday, Timothy J. & Kwak, Sally, 2008. "What Is a Peer? The Role of Network Definitions in Estimation of Endogenous Peer Effects," IZA Discussion Papers 3335, Institute for the Study of Labor (IZA).
- I12 - Health, Education, and Welfare - - Health - - - Health Production
- I20 - Health, Education, and Welfare - - Education - - - General
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- Son Thierry Ly & Arnaud Riegert, 2013. "Persistent Classmates: How Familiarity with Peers Protects from Disruptive School Transitions," PSE Working Papers halshs-00842265, HAL.
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- Son Thierry Ly & Arnaud Riegert, 2013. "Persistent Classmates: How Familiarity with Peers Protects from Disruptive School Transitions," Working Papers halshs-00842265, HAL.
- Halliday, Timothy J. & Kwak, Sally, 2009.
"Weight gain in adolescents and their peers,"
Economics & Human Biology,
Elsevier, vol. 7(2), pages 181-190, July.
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