Teaching productive noun suffixes to severely retarded children.
D000293:Adolescent; D001296:Audiovisual Aids; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006778:Hospitals, Psychiatric; D006801:Humans; D007100:Imitative Behavior; D007802:Language; D007804:Language Development; D008297:Male; D012054:Reinforcement, Psychology; D013060:Speech; D013637:Tape Recording; D013663:Teaching