Our knowledge about Autism Spectrum Disorders (ASD) and effective treatment methods has significantly increased over the last 35 years. For the broad spectrum of impairments there is now a spectrum of acknowledged intervention methods. This manual gives an overview of best practice interventions including applied behavior analysis, precision teaching, and experience-based and visual approaches. These methods are integrated into the curriculum component of this manual, called STEP (Structured Therapy and Experience-based Programs). Guidelines are presented for parents and professionals to match the child's skill profile, learning style and interest to the best possible intervention method. Numerous case studies, examples, sketches and pictures make this book very reader-friendly. Reproducible forms are provided for skills assessment, data collection and teaching in the following areas: *Attention, Eye Contact, and Joint Attention *Matching and Sorting *Imitation *Language Comprehension *Active Communication and First Utterances *Expanded Communication *Play and Social Behavior *Self-Help Skills and Independence