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…

When hearing speakers address a mixed audience of hearing and deaf participants,[1] they have a choice of three methods by which to convey the information in their presentation. They may choose to use English and provide an English-to-ASL interpreter, use ASL and provide an ASL-to-English interpreter, or use simultaneous communication (SimCom).…

The study of effects of mode (manual only, manual plus oral, and manual plus oral plus aural) and language (Signed English or American Sign Language) on the comprehension of deaf students (mean age 16 years) found no significant treatment effect for mode of presentation; there was an interaction between languages and mode. (Author/DB)