Signing systems that attempted to represent spoken language via manual signs -- some invented, and some borrowed from natural sign languages -- have historically been used in classrooms with deaf children. However, despite decades of research and use of these systems in the classroom, there is little evidence supporting their educational…

Twenty-eight deaf adolescents enrolled in a day-class program for the hearing impaired were administered a battery of four short factual stories using oral, manual, simultaneous, and interpreted modalities of communication. (Author/PHR)