And so he noticed they-- they're surprised by peek-a-boo.

他注意到,儿童会对捉迷藏感到惊奇

耶鲁公开课 - 心理学导论课程节选

And Piaget's claim was one reason why they're surprised at peek-a-boo is you go-- you look at a kid, the kid's smiling and go, "Oh, peek-a-boo," and you close--and you cover your face and the kid says, "He's gone."

皮亚杰认为,他们对捉迷藏感到惊奇的一个原因便是,你凭空消失了,你看着婴儿,婴儿会对你笑,然后你和他玩捉迷藏,"躲猫猫",你用双手遮住了你的脸,婴儿会以为,"他不见了"

耶鲁公开课 - 心理学导论课程节选