Classroom environments as they relate to mentally retarded children's observable behavior.
D002648:Child; D002652:Child Behavior; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000523:psychology*; D007398:Interpersonal Relations; D008297:Male; D012931:Social Environment; D013663:Teaching