title: What does mean length of utterance mean? Evidence from a comparative study of normal and Down's syndrome children.
mesh_terms: D002675:Child, Preschool; D004314:Down Syndrome / Q000503:physiopathology* / Q000523:psychology; D005260:Female; D006801:Humans; D007223:Infant; D007804:Language Development; D008297:Male; D013060:Speech; D014825:Vocabulary