The paper, one-third of which consists of appendixes, examines the emergence, development, and growth of the Registry of Interpreters for the Deaf, Inc. The literature is reviewed relative to the historical, philosophical, and general forces bearing on the evolution of sign language into a formal language, which was a prerequisite to the…

The present study examined the effects of communication mode (oral vs. oral plus manual) and level of communicative competence (high vs. low) on profoundly deaf preschool children's play interactions with their hearing mothers. The sample consisted of 28 dyads equally divided into groups of oral and simultaneous (oral plus manual) communicators…