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胡卓恺
"But undeniably we got most of our knowledge about babies from studies of their looking times.That’s one thing babies can do.They can look.And I have up here—this is a picture of Elizabeth Spelke,who’s a developmental psychologist who’s developed the most research on looking at babies’looking times and what you could learn from them.And I have here two ways you could learn from looking.One is preference.So for instance,suppose you want to know,for whatever reason,do babies like the looks of dogs or cats?You could put a baby down,have a picture of a dog here,a picture of a cat here,and see which one the baby looks at.Babies can move their eyes and that could tell you something.Do babies distinguish pretty faces from ugly faces?Put a pretty face here,an ugly face here,see if the baby prefers to look at the pretty ones.