Teaching interactive signing in a dialogue situation to mentally retarded individuals

Abstract

Verbal prompts, modeling, physical guidance, positive reinforcement, fading, and chaining procedures were used to teach two nonverbal individuals, one severely and one moderately mentally retarded, an interactive signing dialogue in a naturalistic snack time setting. Both were required to initiate signed communication and to respond to signed communication with either action or manual signing. Using a multiple probe design across three dialogue situations, each client was successively taught his role in each dialogue with a staff member serving as his partner. After both trainees had mastered a dialogue role, signing competency was formally probed as they interacted with their staff partner in a maintenance situation and with the other trainee in a generalization situation. Results showed that clients could learn to use signed communication in each dialogue situation but that extensive training was required. Data also indicated that only partial generalization to the client-client situation occurred.