Studies dealing with toilet training of severely/profoundly retarded persons are reviewed since the systematic operant approach of N. Azrin and R. Foxx in 1971. Replications are said to be few in number and equivocal in results, although modifications with retarded and nonretarded populations have produced informative and innovative approaches.…

Technology has been used to measure visual acuity with the severely or profoundly mentally retarded child. The following categories of technology have been used for assessment: the recording of visual fixation within the habituation paradigm; equipment to measure eye movements and pursuits; operant techniques; and electrodiagnostic techniques…

This article discusses basic learning processes utilized by children with profound intellectual disabilities, including classical conditioning, operant conditioning, and habituation. The article also explores how these learning processes may be used in assessing the capabilities and preferences of children with profound intellectual disabilities.…