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TYPICAL DEVELOPMENT

7 - 12 MONTHS

  • Uses speech sounds to get attention

  • Listens when spoken to

  • Says 1-3 words

  • Uses nouns almost exclusively

  • Understands simple commands

3 - 4 YEARS

  • Speech is 80% intelligible to strangers

  • Understands 1200-2000 or more words

  • Says 800-1500 or more words

  • Understands object function

  • Understands differences in meanings (stop-go, in-on, big-little)

  • Follows 2-3 step commands

  • Asks and answers simple questions (who, what, where, why)

  • Uses language to express emotion

  • Uses 4-5 words in sentences

  • Is conscious of past and future

  • Appropriately uses ‘is’, ‘are’, and ‘am’ in sentences

  • Uses pronouns (him, her, he, she, they etc.)

  • Tells two events in chronological order

  • Engages in long conversation

13 - 18 MONTHS

  • Says 3-20 words or more

  • Produces 2-word phrases

  • Follows simple commands

  • Produces mostly unintelligible speech

  • Combines gestures and vocalizations

  • Requests more of desired items

19 - 24 MONTHS

  • Uses words more frequently

  • Understands 300 or more words

  • Says 50-100 or more words

  • Starts to combine nouns and verbs

  • Begins to use pronouns (I and mine)

  • Is 25-50% intelligible to strangers

  • Answers “what’s that?” questions

  • Enjoys listening to stories

  • Knows 5 body parts

  • Follows 2-part commands

2 - 3 YEARS

  • Speech is 50-70% intelligible to strangers

  • Understands 500-900 or more words

  • Says 50-250 or more words

  • Uses 3-4 word phrases

  • Asks 1-2 word questions

  • Verbalizes toilet needs

  • Requests items by name

  • Responds to some yes/no questions

  • Follows simple commands and answers simple questions

  • Enjoys listening to short stories, songs, and rhymes

  • Understands who, whose, and how many

  • Understands most things said to him/her

  • Uses vowels correctly

  • Uses ‘ing,’ possessive ‘s,’ and plural ‘s’

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