Infants rely on eye contact to align brain activity with speakers during language learning

A collaborative study involving researchers from the University of Cambridge and Nanyang Technological University has uncovered how infants use eye contact to engage with speakers during language learning. The findings suggest that brainwave synchronization between an infant and a speaker is most effective when visual connection is established, enabling selective attention to spoken input. Experiments involved observing infants aged between eight and ten months as they were exposed to unfamiliar languages under different visual conditions. The results consistently showed that learning occurred only when the infants could see the speaker’s eyes, regardless of how long they looked at the screen overall. This effect held true across two distinct cultural groups, though variations in gaze duration were noted. The study highlights a fundamental role for eye contact in early communication development, offering insights into how infants distinguish and process linguistic information from their surroundings. These discoveries could inform future research on language acquisition and social interaction in early childhood.