Ross W. Greene, PhD, is the author of the influential, best-selling books The Explosive Child and Lost at School and a fierce and articulate advocate for the compassionate understanding and treatment of behaviorally challenging kids and their caregivers. Drawing upon vast clinical and consultation experience and research in the neurosciences, his innovative, research-based Collaborative & Proactive Solutions (CPS) approach – which posits that challenging behavior is the result of lagging skills (rather than lagging motivation) and emphasizes solving problems collaboratively (rather than use of motivational procedures) – has been implemented in countless thousands of families and hundreds of general and special education schools, inpatient units, and residential and juvenile detention facilities.