Brown's Stages of Grammatical Morphemes

Question 1

Stage I (12-26 mos)

Answer 1

1. 50 Vocab Words
2. Basic phrases (more juice, my doll)

Question 2

Stage II (27-30 mos)

Answer 2

1. Present progressive - ing (Man running)
2. “in” and “on” (in house)
3. Regular plural s (my kids)

Question 3

Stage III (31-34 mos)

Answer 3

1. Irregular past tense (me drew)
2. Possessive (daddy’s hat)
3. Uncontractible Copula (he is sick)

Question 4

Stage IV (35- 40 mos)

Answer 4

1. Articles (a, the)
2. Regular past tense (she shopped)
3. 3rd person regular present (he runs)

Question 5

Stage V (41- 46+ mos)

Answer 5

1. 3rd person irregular (doggy does tricks)
2. Uncontractible auxillary (he was jumping)
3. Contractible copula (she’s happy)
4. Contractible auxillary (she’s dancing)