Important Milestones: Your Baby By Four Months
How your child plays, learns, speaks, acts, and moves offers important clues about your child’s development. Developmental milestones are things most children can do by a certain age.
Check the milestones your child has reached by the end of 4 months. Take this with you and talk with your child’s doctor at every visit about the milestones your child has reached and what to expect next.
What most babies do by this age:
Social and Emotional
- Smiles spontaneously, especially at people Photo_03
- Likes to play with people and might cry when playing stops
- Copies some movements and facial expressions, like smiling or frowning
- Begins to babble
- Babbles with expression and copies sounds he hears
- Cries in different ways to show hunger, pain, or being tired
Cognitive (learning, thinking, problem-solving)
- Lets you know if he is happy or sad Photo_03
- Responds to affection
- Reaches for toy with one hand Photo_03
- Uses hands and eyes together, such as seeing a toy and reaching for it Photo_03
- Follows moving things with eyes from side to side Photo_03
- Watches faces closely Photo_03
- Recognizes familiar people and things at a distance
- Holds head steady, unsupported Photo_03
- Pushes down on legs when feet are on a hard surface Photo_03
- May be able to roll over from tummy to back Photo_03
- Can hold a toy and shake it and swing at dangling toys Photo_03
- Brings hands to mouth
- When lying on stomach, pushes up to elbows Photo_03
- Doesn’t watch things as they move
- Doesn’t smile at people
- Can’t hold head steady
- Doesn’t coo or make sounds
- Doesn’t bring things to mouth
- Doesn’t push down with legs when feet are placed on a hard surface
- Has trouble moving one or both eyes in all directions
Tell your child’s doctor or nurse if you notice any of these signs of possible developmental delay for this age, and talk with someone in your community who is familiar with services for young children in your area, such as your state’s public early intervention program. For more information, visit our “If You’re Concerned” web page or call 1-800-CDC-INFO.
The American Academy of Pediatrics recommends that children be screened for general development using standardized, validated tools at 9, 18, and 24 or 30 months and for autism at 18 and 24 months or whenever a parent or provider has a concern. Ask your child’s doctor about your child’s developmental screening.
“Learn the signs. Act early.” materials are not a substitute for standardized, validated developmental screening toolsCdc-pdfExternal.
Adapted from CARING FOR YOUR BABY AND YOUNG CHILD: BIRTH TO AGE 5, Fifth Edition, edited by Steven Shelov and Tanya Remer Altmann © 1991, 1993, 1998, 2004, 2009 by the American Academy of Pediatrics and BRIGHT FUTURES: GUIDELINES FOR HEALTH SUPERVISION OF INFANTS, CHILDREN, AND ADOLESCENTS, Third Edition, edited by Joseph Hagan, Jr., Judith S. Shaw, and Paula M. Duncan, 2008, Elk Grove Village, IL: American Academy of Pediatrics.