title: ENVIRONMENTALLY PRODUCED RETARDATION-INSTITUTION AND PREINSTITUTION INFLUENCES.
mesh_terms: D002648:Child; D004777:Environment; D006801:Humans; D008607:Intellectual Disability; D007361:Intelligence Tests; D010287:Parent-Child Relations; D013060:Speech; D014705:Verbal Behavior; D014825:Vocabulary
keywords: INTELLIGENCE TESTS; MENTAL RETARDATION; PARENT-CHILD RELATIONS; SPEECH; VERBAL BEHAVIOR; VOCABULARY