At a mere five months of age, babies seemingly have the ability to recognize very complex grammatical structures. It is believed that the ability to recognize such embedding is unique to humans. These results mark the earliest evidence to date of this basic ability in humans.

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At a mere five months of age, babies seemingly have the ability to recognize very complex grammatical structures. It is believed that the ability to recognize such embedding is unique to humans. These results mark the earliest evidence to date of this basic ability in humans.