[...] there is no sensible way to equate children across languages for Mean Lenght of Utterance. For example, the sentence "Wolves eat sheep" would receive a total morpheme count of four (using Brown's criteria for calculating MLU: [Brown, R., 1973, “A First Language”, Harvard University Press, Cambridge, Mass.]).
- Bates & Friederici & Wulfeck (2004), a pag.277