The overall objective of this study was to investigate the longitudinal association between diffusion of responsibility and pro-aggressive bystander behavior across three time points in upper elementary education. This three-wave longitudinal study included 1905 Swedish students who completed a questionnaire in at least one of the three waves: the…

Teachers have a major impact on students' social cognition and behaviors, and previous research has found that students who have positive relationships with their teachers tend to be less bullied by their peers. However, this line of research is limited in that it has been (a) Dominated by cross-sectional studies and (b) Treated bullying…