A literature review was conducted to describe important concepts involved in functional analysis of verbal behavior as well as to evaluate empirical research findings on acquisition of picture exchange-based vs. signed mands to suggest instructional implications for teachers and therapists to teach functional communication skills to children with…

Researchers and clinicians have recommended that sign language be taught to typically developing children during their first 2 years of life; however, existing research does not provide adequate information regarding appropriate methods of sign training. We used delayed physical prompting and reinforcement to teach manual signs to 3 children…

Four nonverbal autistic boys (ages 11-16) were successfully taught sign language action-object phrases following an intervention composed of prompting, fading, stimulus rotation, and differential reinforcement. The skill generalized to new situations. (Author/DB)