-
Period: to
One month
The child cries to communicate that he/she is uncomfortable -
Period: to
Six months
The child is now learning to vocalize pleasures and displeasures -
Period: to
Nine months
The child is now responding to 1 or 2 words other than his/her name -
Period: to
13 to 18 months
The child now know to vocalize up and down -
Period: to
24 months
The child now is able to form short sentences with a vocabulary of about 300 words. -
Period: to
Three years
The child now is able to repeat common rhymes -
Period: to
Four years
The child is now able to ask the "W" questions (what, where, why,when) -
Period: to
5 years
Child now speaks in complete sentences that have up to 6 words -
Period: to
7 years
Child is now able to read and write -
Period: to
13 to 18 years
Child is now able understand high level of comprehension and vocabulary