- Startles to loud sounds
- Quiets or smiles when spoken to
- Seems to recognize your voice and quiets if crying
- Increases or decreases sucking behavior in response to sound
- Moves eyes in direction of sounds
- Responds to changes in tone of your voice
- Notices toys that make sounds
- Pays attention to music
7 Months–1 Year
- Enjoys games like peek-a-boo and pat-a-cake
- Turns and looks in direction of sounds
- Listens when spoken to
- Recognizes words for common items like "cup", "shoe", "book", or "juice"
- Begins to respond to requests (e.g. "Come here" or "Want more?")
1 Year–2 Years
- Points to a few body parts when asked.
- Follows simple commands and understands simple questions ("Roll the ball," "Kiss the baby," "Where's your shoe?").
- Listens to simple stories, songs, and rhymes.
- Points to pictures in a book when named.
2 Years–3 Years
- Understands differences in meaning ("go-stop," "in-on," "big-little," "up-down").
- Follows two requests ("Get the book and put it on the table").
- Listens to and enjoys hearing stories for longer periods of time
3 Years–4 Years
- Hears you when you call from another room.
- Hears television or radio at the same loudness level as other family members.
- Understands words for some colors, like red, blue, and green
- Understands words for some shapes, like circle and square
- Understands words for family, like brother, grandmother, and aunt
4 Years–5 Years
- Understands words for order, like first, next, and last.
- Understands words for time, like yesterday, today, and tomorrow.
- Follows longer directions, like "Put your pajamas on, brush your teeth, and then pick out a book."
- Follows classroom directions, like "Draw a circle on your paper around something you eat."
- Hears and understands most of what is said at home and in school.
(From the American Speech and Hearing Association www.ASHA.com)