Reinforcement Behavior Therapy by Kindergarten Teachers on Preschool Children's Aggression: A Randomized Controlled Trial.

Background: Aggression is a kind of behavior that causes damage or harm to others. The prevalence of aggression is 8-20% in 3-6 years old children. The present study aimed to assess the effect of training kindergarten teachers regarding reinforcement behavior therapy on preschoolers' aggression.