A method of communication for non-speaking severely subnormal children.
D000293:Adolescent; D002547:Cerebral Palsy / Q000150:complications; D002648:Child; D002675:Child, Preschool; D003142:Communication; D003638:Deafness / Q000628:therapy; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D008722:Methods; D009155:Mutism / Q000628:therapy*; D010468:Perceptual Disorders / Q000150:complications; D013064:Speech Disorders / Q000628:therapy; D014796:Visual Perception