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Estimating the Effects of Friendship Networks on Health Behaviors of Adolescents

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  • Jason M. Fletcher
  • Stephen L. Ross

Abstract

This paper estimates the effects of friends' health behaviors, smoking and drinking, on own health behaviors for adolescents while controlling for the effects of correlated unobservables between those friends. Specifically, the effect of friends' health behaviors is identified by comparing similar individuals who have the same friendship opportunities because they attend the same school and make similar friendship choices, under the assumption that the friendship choice reveals information about an individual's unobservables. We combine this identification strategy with a cross-cohort, within school design so that the model is identified based on across grade differences in the clustering of health behaviors within specific friendship patterns. Finally, we use the estimated information on correlated unobservables to examine longitudinal data on the on-set of health behaviors, where the opportunity for reverse causality should be minimal. Our estimates for both behavior and on-set are very robust to bias from correlated unobservables.

Suggested Citation

  • Jason M. Fletcher & Stephen L. Ross, 2012. "Estimating the Effects of Friendship Networks on Health Behaviors of Adolescents," NBER Working Papers 18253, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:18253
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    Cited by:

    1. Fletcher, Jason M. & Ross, Stephen L. & Zhang, Yuxiu, 2020. "The consequences of friendships: Evidence on the effect of social relationships in school on academic achievement," Journal of Urban Economics, Elsevier, vol. 116(C).
    2. Aliaksandr Amialchuk & Onur Sapci, 2022. "The long‐term health effects of initiating smoking in adolescence: Evidence from a national longitudinal survey," Health Economics, John Wiley & Sons, Ltd., vol. 31(4), pages 597-613, April.
    3. Bet Caeyers & Marcel Fafchamps, 2016. "Exclusion Bias in the Estimation of Peer Effects," NBER Working Papers 22565, National Bureau of Economic Research, Inc.
    4. Nirav Mehta & Ralph Stinebrickner & Todd Stinebrickner, 2019. "Time‐Use And Academic Peer Effects In College," Economic Inquiry, Western Economic Association International, vol. 57(1), pages 162-171, January.
    5. Topa, Giorgio & Zenou, Yves, 2015. "Neighborhood and Network Effects," Handbook of Regional and Urban Economics, in: Gilles Duranton & J. V. Henderson & William C. Strange (ed.), Handbook of Regional and Urban Economics, edition 1, volume 5, chapter 0, pages 561-624, Elsevier.
    6. Jason M. Fletcher & Stephen L. Ross & Yuxiu Zhang, 2013. "The Determinants and Consequences of Friendship Composition," Working papers 2013-31, University of Connecticut, Department of Economics.
    7. Bet Caeyers, 2014. "Exclusion bias in empirical social interaction models: causes, consequences and solutions," CSAE Working Paper Series 2014-05, Centre for the Study of African Economies, University of Oxford.
    8. Landini, Fabio & Montinari, Natalia & Pin, Paolo & Piovesan, Marco, 2016. "Friendship network in the classroom: Parents bias on peer effects," Journal of Economic Behavior & Organization, Elsevier, vol. 129(C), pages 56-73.
    9. Stephen Billings & David Deming & Stephen L. Ross, 2016. "Partners in Crime: Schools, Neighborhoods and the Formation of Criminal Networks," Working Papers 2016-006, Human Capital and Economic Opportunity Working Group.
    10. Wang, Muwen, 2023. "Opposite-gender friendships and learning performance of students: Evidence from China," International Journal of Educational Development, Elsevier, vol. 101(C).
    11. Chen, Xi & Sahn, David E. & Zhang, Xiaobo, 2018. "Social Interactions and Stigmatized Behavior: "Donating" Blood Plasma in Rural China," IZA Discussion Papers 11413, Institute of Labor Economics (IZA).
    12. repec:oxf:wpaper:wps/2014-05 is not listed on IDEAS

    More about this item

    JEL classification:

    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior

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