Working in Movement

You don't have to work hard to sense if someone is feeling fear. In fact, you don't have to work at all. Your amygdala, a small portion of the brain, does it for you automatically. And it does it by monitoring the size of the whites of the eyes in the person you're observing; the bigger the whites, the more fear observed, at least according to research published this week in the journal Science. Sensing Fear is an audio interview with the researcher on NPR's Talk of the Nation.)