You take a nine-month-old and for Piaget a nine-month-old is just starting to make sense of objects and their permanence.

你找到一个九个月大的婴儿,在皮亚杰看来,九个月大的婴儿才刚刚发展出,客体以及客体永存性的概念

耶鲁公开课 - 心理学导论课程节选

And to discover the intelligence of babies we have to ourselves be pretty smart in developing different techniques.

要想探究婴儿的智力,我们就必须足够聪明,发明出不同的研究技术

耶鲁公开课 - 心理学导论课程节选

Do babies distinguish pretty faces from ugly faces?

婴儿能区分出漂亮和丑陋的脸庞吗

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They sound different to babies too.

婴儿们也会听出它们的不同

耶鲁公开课 - 心理学导论课程节选

So, English-speaking children, for instance, can--English-speaking babies, babies who are born in the United States can distinguish between English phonemes like "Lip" And "Rip".

在美国出生的讲英语的婴儿,能够区分出诸如"Lip"和"Rip"这样的,英语音位上的差别

耶鲁公开课 - 心理学导论课程节选