What is MLU in language acquisition?
Mean length of utterance (MLU) is the average number of morphemes per utterance. It is an index of expressive language development used beyond the stage of single words, when a child uses two or more words together in an utterance.
What is normal MLU?
MLU Norms. 31-34 months: average MLU is 2.75, with a range from 2.5 to 3.00. 35-40 months: average MLU is 3.5, with a range from 3.0 to 3.75. 41-46+ months: average MLU is 4.0, with a range from 3.75 to 4.5 (2)
Why is MLU useful?
MLU is important because if a child says “my toy,” that’s two morphemes. If the child says “my toys” then the child used three morphemes. If you were counting by the number of words the child used, they both used two, however the child who added the “s” made the utterance more linguistically complex.
What is MLU for a 5 year old?
At 4 years old expected MLU is 4.4 morphemes, at 4 years 3 months expected MLU is 4.71, at 4 years 6 months expected MLU is 5.02, at 4 years 9 months expected MLU is 5.32 and at 5 years expected MLU is 5.63 (Miller & Chapman, 1981).
How would you describe MLU?
Mean length of utterance (or MLU) is a measure of linguistic productivity in children. It is traditionally calculated by collecting 100 utterances spoken by a child and dividing the number of morphemes by the number of utterances. A higher MLU is taken to indicate a higher level of language proficiency.
How do you collect MLU?
One you have a document with just the child’s utterances, go to Tools —> Word Count. Step Three: Divide the number next to Words (113 in this example) by 50 (the total number of utterances). This calculation gives you an MLU of 2.26.
How do you calculate MLU in words?
Microsoft Word for Language Sample Analysis One you have a document with just the child’s utterances, go to Tools —> Word Count. Step Three: Divide the number next to Words (113 in this example) by 50 (the total number of utterances). This calculation gives you an MLU of 2.26.
How do you calculate MLU in a language sample?
One you have a document with just the child’s utterances, go to Tools —> Word Count. Step Three: Divide the number next to Words (113 in this example) by 50 (the total number of utterances). This calculation gives you an MLU of 2.26. Easy, right?!
What can MLU tell you?
What is the relationship between MLU and chronological age?
As chronological age increases, MLU tends to increase.
How do you find the MLU?
How do you count morphemes for MLU?
2 Count the morphemes in each utterance according to the guidelines set out in the ‘DO count’ and ‘DO NOT count’ sections below. 3 Add the number of morphemes for all 100 utterances to give a total number of morphemes used.