title: Characterizing verbal interaction among moderately mentally retarded peers: some methodological issues.
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000523:psychology*; D007398:Interpersonal Relations; D007804:Language Development; D008297:Male; D008722:Methods; D010379:Peer Group; D014705:Verbal Behavior