This study compared use of trainer demonstrations and use of visual cues across varying difficulties of task, by 20 mentally retarded secondary-aged students. Results found that photographs and line drawings were more effective with mildly/moderately retarded students than demonstrations when working with complex tasks. No differences were found…

This research review examines the effects of instructional variables on the learning of handicapped and nonhandicapped individuals. The research review begins with an historical look at learning disabilities research. An overall analysis of the differential effects of instructional variables on learning-disabled and nonhandicapped individuals…