Upon birth, “normal” development is difficult to define as every child develops in his or her own way and at his or her own pace. Nevertheless, there are general milestones for hearing development to serve as a guide.  Realize that it is more important to note whether your child progresses naturally through the different developmental stages rather than focusing on reaching a specific milestone by a specific age.  You may choose to use the information in this guide to help you start a conversation with your child’s pediatrician regarding any concerns you may have about your child’s hearing development.

• 0-4 months
Startles to sudden or loud sounds
Begins to localize sounds with eyes or head movements


• 3-6 months
Shows interest in different sounds
Experiments with making own sounds
Seemingly recognizes familiar voices


• 6-12 months
Babbles
Begins to understand simple words such as “mommy” and bye-bye”
Begins to follow simple instructions


• 12-18 months
Words begin to form from the babble
Can use around 20 words and understand around 50 words


• 2 years
Can usually speak in simple sentences using a vocabulary of around 200-300 words
Enjoys being read to and can identify and name many things in picture books


• 3-4 years
Uses words and sentences to express needs, questions and feelings
Vocabulary, pronunciation and understanding improve markedly during these years