The Structure of Peers: The Impact of Peer Networks on Academic Achievement

Peer effects are an important contributing factor in the learning process. Most of the prior literature on peer effects focuses on the characteristics of peers rather than examining the structure of peer networks. We attempt to measure not only the impact of peers but also the structure of the peer...

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Bibliographic Details
Published in:Research in higher education 2019-11, Vol.60 (7), p.931-959
Main Authors: Berthelon, Matias, Bettinger, Eric, Kruger, Diana I., Montecinos-Pearce, Alejandro
Format: Article
Language:English
Subjects:
Academic Achievement
College Freshmen
Education
Group Dynamics
Heterogeneous Grouping
Higher Education
Institutional Characteristics
Learning Processes
Networks
Outcomes of Education
Peer Influence
Peers
Program Effectiveness
Social networks
Student Characteristics
University students
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Summary:Peer effects are an important contributing factor in the learning process. Most of the prior literature on peer effects focuses on the characteristics of peers rather than examining the structure of peer networks. We attempt to measure not only the impact of peers but also the structure of the peer network. In particular we are interested in the characteristics of students' study groups along several dimensions: quality, heterogeneity, size and cohesion. Using pre-college characteristics of students and a random assignment into sections in their first year, we construct instruments of the study group measures to control for endogeneity of the network formation. Our OLS and IV estimates suggest that peer quality improves student performance, and that the breadth and cohesion of students' network positively affects student outcomes. We also find significant heterogeneity of the results depending on network characteristics. Our findings can be used to assist university administrators or professors to choose criteria for sorting students into study groups.
ISSN:0361-0365
1573-188X
DOI:10.1007/s11162-018-09543-7