Bystander Intervention is an effective program to prevent and reduce violence at educational institutions also in the long term

SAPPHO Scientific evidence Bystander Intervention is an effective program to prevent and reduce violence at educational institutions also in the long term

Bystander Intervention is one of the evidence based interventions that has proven to reduce and prevent violence in all its forms at educational institutions from schools to universities. Its approach focuses on the empowerment of the witnesses to speak up and report the possible violence and harassment situations as an effective action to protect the victims. 

Now, evidence goes beyond demonstrating the efficacy of the program to prove that Bystander Intervention does not only have immediate effects in the short term but also in the long run.


Coker, A. L., Bush, H. M., Brancato, C. J., Huang, Z., Clear, E. R., & Follingstad, D. R. (2020). Longer Term Impact of Bystander Training to Reduce Violence Acceptance and Sexism. Journal of School Violence, 1-14. (JCR Q2 in 2019; Scopus Q1 in 2019)

Edwards, K. M., Banyard, V. L., Sessarego, S. N., Waterman, E. A., Mitchell, K. J., & Chang, H. (2019). Evaluation of a bystander-focused interpersonal violence prevention program with high school students. Prevention science20(4), 488-498. (JCR Q1 in 2019; Scopus Q1 in 2019)

Wachs, S., Bilz, L., Niproschke, S., & Schubarth, W. (2019). Bullying intervention in schools: A multilevel analysis of teachers’ success in handling bullying from the students’ perspective. Journal of Early Adolescence39(5), 642-668. (JCR Q2 in 2019; Scopus Q1 in 2019)


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Sara Carbonell

I work in a school and on a daily basis, I can see that through the implementation of the dialogical model of conflict prevention the intervention of witnesses has increased both to stop direct aggression and to tell or look for help when they find out or see something. Children are safe to intervene and no longer look the other way or encourage the aggressor because they know that protecting and acting is courageous and they will not be alone. Coexistence has improved, reducing the intensity of the violence and managing to stop it from the first moments. 

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