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Smeets, Paul M.; And Others – Research in Developmental Disabilities, 1990
Two time-delay conditions for teaching complex visual discriminations to 14 normal preschoolers, 12 with mild mental retardation, and 11 with moderate mental retardation were compared. Results indicated that for all populations and stimuli, time delay of multiple dynamic distinctive-feature prompts produced learning, while time delay of the single…
Descriptors: Comparative Analysis, Cues, Discrimination Learning, Mental Retardation

Repp, Alan C.; And Others – Journal of Applied Behavior Analysis, 1990
The study compared the task demonstration model and the standard prompting hierarchy in training 8 persons (ages 16-21) with moderate or severe mental retardation on a discrimination task. The task demonstration model was found to be superior during both training and generalization phases. (DB)
Descriptors: Adolescents, Cues, Demonstrations (Educational), Discrimination Learning