Rooted in both ABA and developmental theory, Naturalistic Developmental Behavioral Interventions (NDBI) are some of today's most effective, evidence-based, and widely used interventions for autism spectrum disorder. Prepare tomorrow's autism professionals for success in the field with this graduate-level textbook, the first comprehensive introduction to the principles and practices of NDBI. Future professionals will start with a clear and detailed overview of NDBI, examining how these approaches use natural environments and personal interests to motivate the child and bring about lasting improvements in skills and behavior. Then they'll explore the foundational principles of NDBI, take an in-depth look at the most successful NDBI models, and learn how to use specific NDBI strategies to improve child outcomes. This book will prepare future professionals to: (1) Identify quality indicators of NDBI program; (2) Understand how proven NDBI models, including Pivotal Response Treatment, Early Start Denver, Enhanced Milieu Teaching, and Project ImPACT fit in the NDBI framework; (3) Select meaningful skills to teach children within their natural environment; (4) Write measurable and attainable goals across developmental domains; (5) Empower parents to use NDBI strategies during everyday interactions with their children; (6) Use NDBI strategies to support children in inclusive environments; (7) Enhance children's communication skills, social competence, and play skills; (8) Support positive behavior and self-regulation using an NDBI framework; and (9) Work NDBI strategies into school-based activities and lessons.