Photo of grandparents and a baby

During the first three years of life, your baby is learning how to communicate:

  • As early as 1 month of age, your baby will know you by your voice and will find your voice calming.

  • At about 2 months, your baby will begin to make cooing sounds. 

  • At about 4 months, your baby will begin to babble.

  • At about 6 months, your baby will string together vowel sounds ("ah", "eh", "oh") and will take turns with you while making sounds – like the back-and-forth of a conversation.

  • At about 9 months, your baby will make a lot of different sounds, like "mamamama" and "babababa."

  • Around 1 year, your baby will say some single words, like "mama" and "dada," and will try to say words you say.

  • At about 18 months (1 ½ years), your child will say several words and will say and shake his or her head "no."

  • At around 2 years, your child will know the names of familiar people and body parts, say sentences with two to four words, and repeat words overheard in conversation.

  • At about 3 years, your child will be able to name most familiar things, say words like "I," "me," "we" and "you," and be able to have a conversation using two to three sentences.

Learn more about your child's development.

Content adapted from the Centers for Disease Control and Prevention, Learn the Signs, Act Early program.