Despite the growing body of evidence that the origins of bullying lie in early childhood, very little is known about the nature of the phenomenon in preschool groups. The current understanding among studies conducted in the school environment is that bullying prevention can only be effective if training with individual children takes place…

This study examined gender differences in the level and developmental course of relational aggression in middle childhood, as well as early predictors and outcomes of relational aggression, after controlling for concurrent physical aggression. Relational (RAgg) and Physical aggression (PAgg) scores for 558 boys and 545 girls at the ages of eight…