The effects of computerized symbol processor instruction on the communication skills of nonspeaking students

Abstract

The purpose of this study was to measure the impact on receptive and expressive language skills of teaching nonspeaking students to use a newly developed computerized symbol processor system. The system consisted of an Apple Ile computer, a Power Pad graphics tablet, and software which allowed the user to write with picture symbols by pressing the desired space on the Power Pad. The system was tested with 43 students from three schools: two self-contained day schools for students with mental disabilities and a residential institution for individuals with severe and multiple disabilities. A pretest-posttest control group design was employed to determine if the intervention had any effects on the receptive and expressive language skills of the system users. Those in the treatment group were taught to use the system for 15 to 20 minutes per day, 5 days a week for 8 consecutive weeks. Those in the control group received no instruction on the system, but participated in their regular classroom instruction duri...