Child Language Acquisition

Stages of CLA

1. Cooing 2 – 4 months; start making comfort sounds to interact with their care givers. Comfort sounds may be grunts or sighs. 

2. Babbling 6 –8 months; begin to use a full range of possible speech sounds even if it hasn’t been heard in their immediate environment. 

3. Holophrastic 12 – 14 months; the words used within this stage aren’t just any words; they will start to use “yes”/”no”, “go” or “bad. But you will never hear them using the words “in”, “the” or “bad”. 

4. Two-word stage 18 – 24 months; use “mini sentence”,  start to use “me” and “you” and some pronouns. 

5. Telegraphic stage 24 – 30 months 

6. Later multiword stage 30+ months
 

http://www.ling.upenn.edu/courses/Fall_1998/ling001/acq.html

http://www.ling.upenn.edu/courses/Fall_2015/ling001/acquisition.html