Debra Pepler, director of the LaMarsh Centre for Research on Violence and Conflict Resolution at Toronto’s York University, studied students in a school - yard situation and found that teachers detect and stop only about 4 percent of bullying incidents.
Debra Pepler, direktur Pusat Riset LaMarsh atas Kekerasan dan Penuntasan Konflik di York University, Toronto, meneliti para siswa dalam suasana halaman sekolah dan mendapati bahwa hanya sekitar 4 persen insiden penindasan yang dideteksi dan dihentikan para guru.