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Drash, Philip W.; And Others – American Journal on Mental Retardation, 1989
The relative effectiveness of three procedures for increasing vocal response to prompt in 15 preschool children with Down Syndrome was compared. Light-dimming and visual screening, when combined with positive reinforcement, were both found to be significantly more effective than positive reinforcement alone. (Author/JDD)
Descriptors: Downs Syndrome, Infants, Instructional Effectiveness, Positive Reinforcement