When Adam was in preschool, he was diagnosed with an autism…

When Adam was in preschool, he was diagnosed with an autism spectrum disorder. Several therapists would come to his home for 4-8 hours a day. He was taught to sit in a chair, respond to his name when called, use familiar gestures, and play with toys using imaginative skills through the use of rewards to shape successive approximations. What type of evidence-based treatment was he most likely receiving?