Developmental Milestones

Early recognition of your child’s condition is one of the greatest assets in treatment. We’ve created a development time table to help assist you in identifying your child’s progress.


6 Months Old

  • Vocalization with intonation
  • Responds to his/her name
  • Responds to human voices by turning his/her head and eyes
  • Knows names of familiar animals
  • Responds appropriately to friendly and angry tones

12 Months Old

  • Uses one or more words with meaning (this may be a fragment of a word)
  • Understands simple instructions, especially if vocal or physical cues are given
  • Practices inflection

18 Months Old

  • Has vocabulary of approx. 5-20 words
  • Vocabulary made up chiefly of nouns
  • Imitates adult speech
  • Is able to follow simple commands

24 Months Old (2 Years)

  • Can name a number of objects common to his/her surroundings
  • Is able to use at least two prepositions, usually from the following: in, on, under
  • Combines words (“Hi mama”)
  • Approx. 2/3 of speech is intelligible
  • Has vocabulary of approx. 150-300 words
  • Can use two pronouns correctly: I, me, you
  • My and mine are beginning to emerge
  • Responds to such commands as “show me your eyes”

36 Months Old (3 Years)

  • Is using plurals and past tenses
  • Knows chief parts of body
  • Speaks in 3-word sentences
  • Has vocabulary of approx. 900-1,000 words
  • About 90% of speech is intelligible
  • Verbs begin to predominate
  • Understands simple questions
  • Able to reason out such questions as “what must you do when you are sleepy, hungry?”
  • Knows his/her sex, name, age

48 Months Old (4 Years)

  • Knows names of familiar animals
  • Can use at least 4 prepositions or can demonstrate understanding of meaning 
  • Names common objects in pictures,books or magazines
  • Knows 1 or more colors
  • Can repeat 4 digits
  • Indulges in make-believe

60 Months Old (5 Years)

  • Can use many descriptive words spontaneously –both adjectives and adverbs
  • Knows common opposites: big-little, hard-soft
  • Has number concepts of 4 or more
  • Can count to 10 or more
  • Speech is intelligible, in spite of minor articulation errors.
  • Able to repeat sentences as long as nine words
  • Able to define common objects in terms of use (hat, shoe)
  • Able to follow three commands
  • Has simple time concepts: morning, afternoon, night, day, later, tomorrow,
  • Speech is grammatically correct