Which vocalization milestone is appropriate for a 9-month-old infant?

Which vocalization milestone is appropriate for a 9-month-old infant?

• A. Produces repetitive vowel sounds such as 'baba' and 'kaka'
• B. Begins to imitate sounds
• C. Says three to five words in addition to 'mama' and 'dada'
• D. Responds to simple verbal commands and understands 'no-no'

Answer: (A)

At nine months, a baby’s vocal development centers on babbling with repeated syllables. This stage, often called reduplicated babbling, includes sounds like “ba-ba” or “da-da.” It shows growing control of the lips, tongue, and vocal cords and marks progress toward real words, even though the syllables aren’t yet meaningful. Imitating sounds can begin around this time, but it’s not as defining a vocal milestone as the repetitive babbling. Saying three to five words with meaning is typical later, around the year to 18 months. Understanding simple commands and “no” is about receptive language and also develops over time, but the hallmark vocal milestone at nine months is the ability to produce repetitive consonant–vowel syllables.

At nine months, a baby’s vocal development centers on babbling with repeated syllables. This stage, often called reduplicated babbling, includes sounds like “ba-ba” or “da-da.” It shows growing control of the lips, tongue, and vocal cords and marks progress toward real words, even though the syllables aren’t yet meaningful.

Imitating sounds can begin around this time, but it’s not as defining a vocal milestone as the repetitive babbling. Saying three to five words with meaning is typical later, around the year to 18 months. Understanding simple commands and “no” is about receptive language and also develops over time, but the hallmark vocal milestone at nine months is the ability to produce repetitive consonant–vowel syllables.