Five children with severe educational retardation, aged 5-12, were involved in sign training in which the spoken words corresponding to signs were receptively known to participants. Whether signs were taught concurrently or in a serial fashion, signs taught by total communication were acquired faster than those taught by sign-alone training.…

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)