An extensive literature on the causes of challenging behaviors has been developed, primarily in the applied behavior analysis literature. One hundred and seventy-three empirical studies were reviewed where functional assessment serves as the primary method of identifying these causes. Most of the studies were able to identify a clear function or…

Two studies involving five students (ages 9-17) with autism found that stereotypy was multiply determined or occurred across all assessment conditions (attention, demand, no-attention, and recreation conditions) and that the presumed association between response topography and behavioral function may be less important than previously realized.…