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0-3 months
The baby coos and babbles -
4-6 months
Pays attention and imitates sounds -
7-8 months
Begins gesturing -
9-12 months
Beginning to understand words, and can say "mama" and "dada" -
1 year old
Says several single words -
Preschoolers
Preschooler carries on a longer abstract and complex conversation, have basic concept of grammar -
Period: to
2-3 years old
Says sentences with 2 to 4 words -
Period: to
Middle Childhood 6-11 years
Talks freely, uses clear and complete sentences, and transitioning from learning to read to read to learn -
Period: to
Early Adolesence 12-15 years old
Converse more socially -
Period: to
Adolescence 16-19
At this period grammatical and vocabulary are advanced. They are able to use complex sentences, in both their oral statements and written language.