mind & bodyanalysisThe Conversation: Arts + Culture (US)

Babies as young as 4 months can tell how the sounds of different languages are made – new research

the gist

Babies as young as four months can already work out how speech sounds are physically made, long before they settle into their native language. Researchers played babies two invented mini-languages, one using lip sounds like b and v and one using tongue-tip sounds like d and z, each paired with a cartoon. When silent videos showed a face matching the learned pairing, babies looked longer, showing they had picked up the rules. This challenges the older view that such pattern learning starts only after babies tune into their native language between six and twelve months.

how it works

Babies start out able to distinguish nearly all speech sounds. Between six and twelve months, they gradually focus on the contrasts used in the language they hear most, which is why adults often struggle to hear sounds absent from their own language. The new study suggests that learning how sounds are made begins even before this narrowing.

so what

The finding suggests language learning starts with a deeper grasp of how sounds are produced than scientists assumed. It could also allow speech and language delays to be spotted and supported earlier.

The Conversation

Illustrative photo · Dinglebrob, CC BY-SA 4.0, via Wikimedia Commons