PMTO is a parenting program created by Gerald Patterson based on social interaction learning theory and coercion theory. It teaches parents five core parenting skills - encouragement, limit setting, monitoring, problem solving, and positive involvement - to improve their children's disruptive behaviors. PMTO has been widely implemented internationally and shows enduring positive effects for both children and parents. Fidelity is ensured through certification of PMTO practitioners. Further research is still needed on cultural adaptations and cascading long term impacts.