Some students with intellectual disabilities require explicit instruction of language skills, including preposition use; however, little is known about effective ways to teach preposition use to this population. This study examined direct instruction (DI) to teach students to use and respond to prepositions. Results indicated that DI was an…

A study used a progressive delay procedure to teach self-control to six adults with mental retardation. At baseline, participants chose an immediate smaller reinforcer rather than a larger delayed reinforcer. Progressive increases in work requirements for gaining access to a larger reinforcer resulted in participants selecting larger delayed…

Two adults with severe mental retardation and profound hearing loss were given computer-based instruction in spelling. Positive results transferred to a retrieval task in which the participant wrote a list of objects displayed, selected the objects from a shelf, and returned the objects to the table. The role of stimulus class in fostering the…

Effects of synthetic speech output on the learning of graphic symbols by three adults with severe to profound mental retardation and communication impairments were evaluated. All participants achieved criterion learning using synthetic speech; two also reached criterion without synthetic speech, but the addition of synthetic speech resulted in…

Behavior analysis was implemented in a school for 38 children with multiple disabilities, following staff training. Results over two years showed educationally significant increases in trials taught, correct student trials, and objectives achieved. During followup, results indicated maintenance and social validity of the behavior analysis package.…