Ross W. Greene is an American clinical child psychologist and the founding director of the non-profit Lives in the Balance. He is widely recognized for originating the evidence-based Collaborative & Proactive Solutions (CPS) model of intervention, a framework designed to help children and adolescents with behavioral challenges. Greene is also the author of several influential books on child behavior, including "The Explosive Child," "Lost at School," "Lost & Found," and "Raising Human Beings.