Claims

Cooperative learning significantly reduced bullying among marginalized (low-engagement) middle school students in a cluster randomized trial

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i2 medium
Currency · newest study 2018 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q3 i2 In intervention schools, bullying at follow-up was significantly lower among low-engagement students, with a significant intervention-by-engagement interaction (effect size .37). → Van Ryzin 2018

Evidence

Van Ryzin 2018

Van Ryzin, M. J., & Roseth, C. J. (2018). Cooperative Learning in Middle School: A Means to Improve Peer Relations and Reduce Victimization, Bullying, and Related Outcomes. Journal of Educational Psychology, 110(8), 1192-1201. https://doi.org/10.1037/edu0000265

q3 · i2 · causal · r2

Cluster randomized trial of 15 rural middle schools (N = 1,460 7th graders) using linear mixed models with intervention-by-baseline-engagement interactions. Table 3 reports the bullying interaction B = .09 (SE .04), p < .05, effect size .37, described as "moderate to large."

"Intervention*Engagement (baseline) .09 (.04) p < .05 .37"

Discussion

Learner Variables

Page metadata
Field Value
type claim
id cooperative-learning-reduces-bullying-marginalized-students
title Cooperative learning significantly reduced bullying among marginalized (low-engagement) middle school students in a cluster randomized trial
description Cooperative learning significantly reduced bullying among marginalized (low-engagement) middle school students in a cluster randomized trial
status review
evidence_strength moderate
newest_evidence 2018
generated by process:wiki-ingest on 2026-10-23
trust unverified — no one has confirmed this page's content
sources 1 — van-ryzin-2018

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