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Comps- language disorder notes.

Present Progressive (-ing)

19-28 months


27-30 months


27-30 months

Regular Plural (-s)

24-33 months

Irregular Past

25-46 months

Possessive ('s)

26-40 months

Uncontractible Copula

27-39 months


28-46 months

Regular Past (-ed)

26-48 months

Regular Third Person (-s)

26-46 months

Irregular Third Person

28-50 months

Uncontractible Auxiliary

29-49 months

Contractible Copula

29-49 months

Contractible Auxiliary

30-50 months

Brown's stage I

Age 12-26 months , MLU = 1-2

Brown's stage II

Age months 27-30, MLU = 2-2.5

Brown's stage III

Age months 31-34, MLU = 2.5- 3

Brown's stage IV

Age months 35-40, MLU = 3- 3.75

Brown's stage V

Age months 41- 46 , MLU = 3.75- 4.5

Brown's stage V+

Age months 47+ , MLU = 4.5+

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