Babies produce a brain signal that suggests they can identify faces at 4 months old, with this signal becoming more robust from 6 months d3sign/Getty Images
Babies may be able to identify people’s faces before anything else, such as cars or letters of the alphabet. Researchers have found that infants as young as 4 months old produce a distinct brain signal when they see an image of someone’s face, which could explain why some babies become scared of strangers at around this age.
at Stanford University in California and her colleagues wanted to better understand how…



