Professor Janet Werker, University of British Columbia
Babies use their tongues not just to make sounds but also to help them to listen, scientists have shown this week. Using a teething toy to temporarily prevent young babies from moving their tongues prevented them being able to tell apart two subtly different sounds. The discovery is important because it reveals a crucial way in which our speech and language develops. So should you give your child a dummy? Chris Smith spoke with study author Janet Werker to find out more...
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