During an eight-month treatment regimen utilizing simultaneous sign/speech input, all of the words of a young girl with Down's Syndrome were recorded. Analyses revealed that most of the words she initially signed were later spontaneously spoken and that most of her signed productions evolved into spontaneous spoken productions. (Author/JDD)

The relative effectiveness of total communication and oral communication training in a parent-assisted, home-based language intervention program was studied with 15 Down's syndrome children, 18-36 months old. (Author/SEW)

Down Syndrome children exhibit language delays, particularly in expressive abilities, more severe than would be anticipated from their cognitive level alone. This research project sought to develop a procedure for introducing total communication into the home environment of prelinguistic Down Syndrome infants and for comparing the relative…