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Version 1.2 – Updated June 2023

Bullying

Overview

  • Influence: Bullying
  • Domain: Classroom
  • Sub-Domain: Classroom management
  • Potential to Accelerate Student Achievement: Likely to have a negative impact
  • Influence Definition: Bullying is an ongoing and deliberate misuse of power in relationships through repeated verbal, physical, and/or social behavior that intends to cause physical, social, and/or psychological harm. It can occur in person, online, by individuals, or by groups at almost any age.

Evidence

  • Number of meta-analyses: 5
  • Number of studies: 81
  • Number of students: 286,799
  • Number of effects: 84
  • Weighted mean effect size: -0.28
  • Robustness index: 3

Meta-Analyses

Meta-Analyses
Journal Title Author First Author's Country Article Name Year Published Variable Number of Studies Number of Students Number of Effects Effect Size
Social Development Nakamoto & Schwartz USA Is Peer Victimization Associated with Academic Achievement? A Meta-analytic Review 2010 Peer victimization on achievement 33 29,552 33 -0.24
International journal of environmental research and public health Samara, Nascimento, El-Asam, Hammuda, & Khattab UK How can bullying victimisation lead to lower academic achievement? A systematic review and meta-analysis of the mediating role of cognitive-motivational factors. 2021 Bullying victimisation 11 257,247 14 -0.26
World Journal of Psychiatry Moore, Norman, Suetani, Thomas, Sly, & Scott USA Consequences of bullying victimization in childhood and adolescence: A systematic review and meta-analysis 2017 Bullying on achievement 6 0 6 -0.73
Psychological Bulletin Kowalski, Giumetti, Schroader, & Lattanner USA Bullying in the digital age: A critical review and meta-analysis of cyberbullying research among youth 2014 Cyberbullying 6 0 6 -0.09
Review of Educational Research Gardella, Fisher, & Teurbe-Tolon USA A Systematic Review of Meta-Analysis of Cyber-Victimization and Educational Outcomes for Adolescents 2017 Cyber-bullying 25 0 25 -0.28
TOTAL/AVERAGE 81 286,799 84 -0.32
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