Can Babies Tell Us About Morality?

A fascinating 60 Minutes segment last Sunday (transcript also available): 

Can infants tell right from wrong? And if so, how would you know? Come to Yale's baby lab. Lesley Stahl reports.

It's a question people have asked for as long as there have been people: are human beings inherently good? Are we born with a sense of morality or do we arrive blank slates, waiting for the world to teach us right from wrong? Or could it be worse: do we start out nasty, selfish devils, who need our parents, teachers, and religions to whip us into shape?

The only way to know for sure, of course, is to ask a baby. But until recently, it's been hard to persuade them to open up and share their secrets. Enter the baby lab.