Evidence map›Paper›PMID 40399919›Full record

ArticleChild and adolescent psychiatry and mental health2025

Adolescent Interpersonal Behaviours and Mental Health Across Two Swedish Cohorts: 15-Year Trends and One-Year Bidirectional Associations in a Mixed-Methods Study.

Moa Nilsson, Benjamin Claréus, Jonas Bjärehed, Marlene Bjärehed, Daiva Daukantaitė

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Article in Child and adolescent psychiatry and mental health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Moa NilssonDepartment of Psychology, Lund University, Lund, 221 00, Sweden.ORCID http://orcid.org/0000-0002-6134-9842
Benjamin ClaréusDepartment of Psychology, Kristianstad University, Kristianstad, 291 88, Sweden. benjamin.clareus@hkr.se.ORCID http://orcid.org/0000-0003-0972-6660
Jonas BjärehedDepartment of Psychology, Lund University, Lund, 221 00, Sweden.ORCID http://orcid.org/0000-0002-2128-6031
Marlene BjärehedDepartment of Primary Teacher Education, Kristianstad University, Kristianstad, 291 88, Sweden.ORCID http://orcid.org/0000-0001-5753-1310
Daiva DaukantaitėDepartment of Psychology, Lund University, Lund, 221 00, Sweden.ORCID http://orcid.org/0000-0002-1994-041X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsAdolescent mental health has declined in recent decades. Few studies have explored whether shifts in interpersonal behaviours- both in-person and online- can help explain this decline. Using data from two Swedish cohorts (2007-2008, 2023-2024), we examined (1) 15-year time trends (2007-2008 vs. 2023-2024) in interpersonal behaviours (victimization, aggression, prosocial behaviours) and mental health (externalizing/internalizing problems); (2) one-year bidirectional associations between them; (3) the unique role of cybervictimization/cyberaggression in relation to mental health; and (4) adolescents' accounts of online experiences that made them 'feel bad'.

methodsTwo longitudinal school cohorts of Swedish adolescents (2007-2008: N = 911-987, M

resultsFrom 2007 to 2008 to 2023-2024, prosocial behaviours moderately declined for girls and boys, while internalizing problems increased moderately for girls and weakly for boys. Meanwhile, victimization, aggression, and externalizing problems increased at a weak-to-moderate level among girls. Victimization and being treated well by others showed moderate bidirectional relationships with mental health. Cybervictimization/cyberaggression had weaker associations with mental health than did in-person behaviours. According to the qualitative analysis of negative online experiences, adolescents reported harassment, social exclusion, perceived standards/expectations, time-consuming activities, and exposure to distressing content.

conclusionsDeteriorating adolescent mental health over the past 15 years has occurred alongside rising interpersonal difficulties. The findings further suggest a reciprocal relationship between social challenges and mental health, with hostile online environments amplifying- but not primarily driving- these issues. A holistic perspective that accounts for both in-person and online experiences is essential to better understand and support adolescent well-being.

Indexed as

AdolescenceAggressionBullyingContent analysisLongitudinalMental healthMixed-methodsOnlineTime-trendsVictimization

Identifiers

PMID40399919
PMCPMC12093687

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.