Toward a General Theory of Peer Effects

Vincent Boucher, Michelle Rendall, Philip Ushchev and Yves Zenou

No 17315, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: There is substantial empirical evidence showing that peer effects matter in many activities. The workhorse model in empirical work on peer effects is the linear-in-means (LIM) model, whereby it is assumed that agents are linearly affected by the mean action of their peers. We provide two different theoretical models (based on spillovers and on conformism behavior) that microfound the LIM model and show that they have very different policy implications. We also develop a new general model of peer effects that relaxes the assumptions of linearity and mean peer behavior and that encompasses the spillover, conformist model, and LIM model as special cases. Then, using data on adolescent activities in the U.S., we structurally estimate this model. We find that for GPA, social clubs, self-esteem, and exercise, the spillover effect strongly dominates, while for risky behavior, study effort, fighting, smoking, and drinking, conformism plays a stronger role. We also find that for many activities, individuals do not behave according to the LIM model. We run some counterfactual policies and show that imposing the mean action as an individual social norm is misleading and leads to incorrect policy implications.

Keywords: Peer effects; Spillovers; Conformism; Structural estimation; Policies (search for similar items in EconPapers)
JEL-codes: C31 D04 D85 Z13 (search for similar items in EconPapers)
Date: 2022-05
References: Add references at CitEc
Citations:

Downloads: (external link)
https://cepr.org/publications/DP17315 (application/pdf)
CEPR Discussion Papers are free to download for our researchers, subscribers and members. If you fall into one of these categories but have trouble downloading our papers, please contact us at subscribers@cepr.org

Related works:
Journal Article: Toward a General Theory of Peer Effects (2024)
Working Paper: Toward a General Theory of Peer Effects (2024)
Working Paper: Towards a General Theory of Peer Effects (2023)
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:cpr:ceprdp:17315

Ordering information: This working paper can be ordered from
https://cepr.org/publications/DP17315

Access Statistics for this paper

More papers in CEPR Discussion Papers from C.E.P.R. Discussion Papers Centre for Economic Policy Research, 33 Great Sutton Street, London EC1V 0DX.
Bibliographic data for series maintained by ().