We used functional communication training to teach Bob, a 10-year-old student with autism and severe language delays, to reject items by touching an icon. Our initial assessment revealed that Bob's behaviours serving a rejecting function consisted of pushing away, yelling, bear hugging-grabbing, and leaving. We used prompting, differential…

A follow-up study of behavior and emotional problems in 53 young people with Williams syndrome 5 years after first assessment found substantial persistence in the overall level of behavior and emotional problems. Comparison with young people with mental retardation due to other causes found Williams subjects had significantly higher overall…

In this study, functional communication training alone and combined with extinction and/or punishment was evaluated for four clients with severe retardation, behavior problems, and communication deficits. Results showed that the combination of training plus punishment produced the largest and most consistent reductions in target behavior problems.…