The Childhood Friendship Project
https://www.childtrends.org/programs/10229-2
Initiative Description: The 6-week program consisted of developmentally appropriate puppet shows, active participatory sessions, passive concept activities and in vivo reinforcement periods. Nine classrooms were randomly assigned to be intervention rooms (N = 202 children) and nine classrooms were control rooms (N = 201 children).
Study Results: The Childhood Friendship Project reduced physical and relational aggression, as well as physical and relational victimization and tended to increase prosocial behavior.
Reference: Ostrov, J. M., Massetti, G. M., Stauffacher, K., Godleski, S. A., Hart, K. C., Karch, K. M., … Ries, E. E. (2009). An intervention for relational and physical aggression in early childhood: A preliminary study. Early Childhood Research Quarterly, 24(1), 15–28. https://doi.org/10.1016/j.ecresq.2008.08.002
Level of Evidence: Very Good