-
2 months
Beginning of language where infant coos and makes pleasant vowel sounds. -
4 months
Infant learns taking turns conversational patterns by playing peek-a-boo and patty cake with a caregiver. -
6 months
Infants begin to babble using vowels and consonants. Infant can comprehend few commonly used words by caregiver. -
8-12 months
Infant can focus on what the caregiver is focused on. Infant can play taking turn games and can trade roles with caregiver. Infant can use gestures to convey information and get a result. -
12 months
Toddler is able to say their first word, babble in intonation patterns of community, and can comprehend words faster. -
18-24 months
Toddler has a 250 word vocabulary and can combine two words. -
3 years old
Child's vocabulary is increases rapidly, the child starts to understand sentence structure, broader word meanings, and pragmatics. -
5 years old
Child has almost 10,000 word vocabulary, uses the correct grammar in sentences, and language has adapted to social expectations. -
6-7 years old
Child has 40,000 words in their vocabulary, child can add time and transitions into conversational sentences, describe objects in detail, and can begin to be fluent in multiple languages. -
12 to 18 years of age
Child adds many abstract words to their vocabulary, can explain the definition of words abstractly, understands figurative language, masters cognitive self regulation, and can adapt language to social context.