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…

Although delusional statements in people with intellectual disabilities and traumatic brain injury can be treated using behavioral interventions, none have demonstrated long-term treatment effects. In the current study, a functional analysis demonstrated that delusional statements were maintained by attention. Differential reinforcement of…

Results showed that the graduated prompting procedure was effective in training reach-grasp responding in all three children; for one child, effects were durable over repeated treatment applications, but not maintained during withdrawals; for another child, the procedure was effective in teaching reach-grasp responding in all three positions.…

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 experiments were conducted to train six severely multihandicapped students (ages 15 to 23) with hearing impairments to put on their own hearing aids independently, and to provide an empirical evaluation of a comprehensive instructional program for putting on a hearing aid by assessing acquisition, maintenance, and generalization of that skill…