Well, put a pretty face here, an ugly face here, see if the baby prefers to look at the pretty one.

在这边放一张漂亮的脸庞,在这边放一张丑陋的脸庞,观察婴儿是否更喜欢注视漂亮的那个

耶鲁公开课 - 心理学导论课程节选

Well, 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.

你可以抱来一个婴儿,在这里呈现一张狗的照片,在这里呈现一张猫的照片,然后观察婴儿会看哪一张照片

耶鲁公开课 - 心理学导论课程节选

So, here's what the baby would see.

这是婴儿所看到的场景

耶鲁公开课 - 心理学导论课程节选