This preoccupation with the face has its origins in human evolution, according to Kuhl, and is explained by a complex neural network designed to interpret social cues—what neuroscientists call the social brain. Operating throughout our lifetimes, the social brain is responsible for making sense of a bewildering, often ambiguous range of human gestures that are crucial for survival. How we respond to an ominous glint in the eye or a fleeting grimace may seem like child’s play. But differentiating between violent intent and mere irritation is sometimes the difference between life and death—and the games we play when we’re young are critical practice for the more serious business of getting along later in life.

Researcher Patricia Kuhl reveals the science behind the social brain—which she calls the gateway to human cognition. https://t.co/yhYjiXkMNH pic.twitter.com/pRsE6BitLx

— edutopia (@edutopia) July 28, 2018

We are hardwired from birth to decode facial expression, posture, and tone of voice—and to work collaboratively. Researcher Patricia Kuhl reveals the science behind the social brain and why humans are masters of social learning. pic.twitter.com/Rp9njI4unY

— edutopia (@edutopia) July 29, 2018