"This is an incredibly helpful book - informed by research in infant/early childhood mental health, insights from the neurosciences, and the latest findings on sensory-regulatory processing difficulties. With its use of plain language and empathic stance, it both demystifies the complex processes underlying young children's development and offers ways to understand and respond to a wide range of emotional and behavioral issues. Collaborative Intervention in Early Childhood is an outstanding resource that early childhood specialists will embrace."--Gerard Costa, Ph.D