We know this because, at around three months old, babies in the UK and China make the very same cooing and gurgling noises ... because their babbling adapts to the language they hear.
What to Expect on MSN4 个月
When Do Babies Start Laughing?
Your baby has been experimenting with sounds from her first month, cooing, gurgling and making throaty ... your baby will be waving and pointing, babbling and playing peekaboo before you know ...
Cooing and gurgling Your baby's initial attempts at communication ... they're laying the foundation for future speech and communication. Babbling also helps develop the muscles and coordination ...