The document provides an introduction to autism spectrum disorders including definitions, potential causes, prevalence statistics, core characteristics, and instructional implications. Autism is defined as a developmental disability affecting communication and social interaction. It is generally diagnosed before age three and can adversely impact educational performance. Common characteristics include repetitive behaviors, resistance to change, and unusual responses to sensory experiences. The prevalence of autism in schools is approximately 0.29% of the population but it affects 1.7% of students with disabilities. Students with autism often benefit from predictable routines, direct instruction, and specialized interventions like applied behavior analysis and social skills training.

1. INTRODUCTION TO EXCEPTIONALITIES SPED 23000 INSTRUCTOR: BRIAN FRIEDT Students with autism spectrum disorders

5. Prevalence