Two experiments with 15 individuals having profound mental retardation found difficulties in identifying reinforcers that were actually effective in treatment of chronic training needs. Research needs in evaluating training alternatives for people with profound multiple disabilities who move very little or who respond with very long latencies are…

This article describes an orientation and mobility program serving 20 students with both developmental disabilities and visual impairments. It documents the low level of baseline behaviors and discusses program components, including the training staff, school environment adaptations, and individualized and community training techniques.…

The study investigated the effects of the overcorrection procedure of functional movement training (in which praise and physical contact are offered for correct positions) on establishing and maintaining the visual attending of a multihandicapped, profoundly retarded learner (20 years old) in a public school program. The effectiveness of positive…