title: Bullying at school: basic facts and effects of a school based intervention program.
authors: Department of Psychosocial Science, University of Bergen, Norway.
authors: D
authors: D
authors: Olweus
mesh_terms: D000293:Adolescent; D000374:Aggression / Q000523:psychology*; D001521:Behavior Therapy; D002648:Child; D002653:Child Behavior Disorders / Q000517:prevention & control* / Q000523:psychology; D015331:Cohort Studies; D004291:Dominance-Subordination; D005260:Female; D006801:Humans; D007389:Internal-External Control; D008297:Male; D009664:Norway; D012056:Reinforcement, Social; D012931:Social Environment