Walking through Harvard Yard, you see it every day — one person stops to look skyward, perhaps trying to catch a glimpse of the hawks that call the area home, and soon most passersby are stopping to look in the same direction.
It’s a phenomenon known as “gaze-following,” and although it’s been demonstrated in dozens of species, researchers have theorized that it may develop in a unique way in humans, because it plays a critical role in learning and socialization.
A new study, however, shows that gaze-following in monkeys develops in a way that’s nearly...
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