This third edition is a foundational text that has been updated and expanded to prepare educators, therapists, and other care providers with vital knowledge and practical skills to support diverse learners on the autism spectrum. Covering an expanse of fundamental topics, this edited volume features new directions in research and practice that are essential to understanding the ever-changing field of autism. Along with new chapters from leading experts (including those who identify as autistic), this revision places greater emphasis on the intersection of neurodevelopmental differences with ethnicity, race, culture, language, gender expression, and socioeconomic experiences. The diverse disciplines and perspectives presented provide a foundation on how these students learn and how best to provide them with effective teaching, therapy, and social supports. This book equips readers with knowledge and skill to competently apply reflective and humanistic practices that prioritize the preferences, strengths, and values of autistic learners from all walks of life.