We automatically tend to smile less at people who are the target of our biases. We see that when we are physically in front of the person, but also when we are on a Webcast and even on the phone. Indeed, our voice transmits our smile. And even when we wear a mask, our eyes and the shape of our face convey our hidden smile.

The people in front of us can easily see our smile. Our mirror neurons encourage us to smile back and be happier, more engaged, and more trusting.