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Watch the BBC first on iPlayer 👉 https://bbc.in/iPlayer-Home Try The McGurk Effect! The McGurk effect is a compelling demonstration of how we all use visual speech information. The effect shows that we can't help but integrate visual speech into what we 'hear'.

More about this programme: http://www.bbc.co.uk/programmes/b00vhw1d

Horizon: Is Seeing Believing? - BBC

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