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Peer-friendship networks and self-harm among adolescents from inner-city schools: a social network study

Abstract:
Peer-relationships are critically important for adolescent behavior, but how peer-friendship network composition and structure influence adolescent self-harm is less clear. The aim of this cross-sectional study was to explore the association between in-school peer-friendship networks, gender, and self-harm among inner-city adolescents. Participants were 2,203 adolescents (mean age = 12.5 years, SD = 1.0; 53% girls) attending inner-city south London schools. Each adolescent nominated friends within their school year to construct sociometric peerfriendship networks and reported on lifetime self-harm. Mixed-effects logistic regression was used to estimate the effects of a comprehensive array of peer-network metrics on self-harm in the sample overall and by gender. Having friends who report self-harm, network over-integration (bridging, popularity), and social isolation (network under-integration) increased odds of self-harm, while sociality and high friendship group density reduced odds. Odds ratios did not vary by gender. The findings indicate that peer-network composition, particularly if friends self-harm, and over- and under-integration in wider peer-networks, may influence early adolescent self-harm, among both boys and girls.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s10964-025-02264-y

Authors

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Institution:
University of Oxford
Division:
MSD
Department:
Experimental Psychology
Role:
Author
ORCID:
0000-0003-1048-4953


Publisher:
Springer Nature
Journal:
Journal of Youth and Adolescence More from this journal
Volume:
55
Issue:
1
Pages:
152–167
Publication date:
2025-10-03
Acceptance date:
2025-09-15
DOI:
EISSN:
1573-6601
ISSN:
0047-2891


Language:
English
Keywords:
Pubs id:
2295520
Local pid:
pubs:2295520
Deposit date:
2025-10-01
ARK identifier:

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