The purpose of this study was to evaluate the effectiveness of using picture activity schedule books to increase on-schedule and on-task behaviors of children with moderate intellectual disabilities. Four students enrolled in a self-contained classroom participated in the study. Graduated guidance, system of least prompts, and verbal prompting…

Research is reviewed that employs delay procedures with the severely handicapped as a means of shifting stimulus control. The parameters of delay procedures are delineated, including prerequisite student and teacher considerations, types of responses, levels of delay, single versus blocked trials, and basic delay methodology. (Author)