High-probability requests were provided to two boys (age seven) with behavior disorders and severe disabilities as an antecedent to delivering a low-probability request. Results showed an immediate increase in appropriate responding when the intervention was delivered. Generalized responding and response maintenance were also exhibited.…

Two studies of three youths (ages 12-14) with severe mental retardation, who used aggression and self-injury to avoid difficult instructional situations, found that simple commands interspersed among more challenging instructional trials were effective at increasing the learners' responsiveness to instructions and decreasing levels of problem…

The use of response cards during classroom review sessions was examined in an earth science class of 23 secondary students, 8 of whom had learning disabilities, mental retardation, or behavior disorders. Results indicated achievement of higher test scores by all students, including those with disabilities, when students had used response cards in…