If the baby really sees it as different, the baby will look longer, and you could use that as a measure of what babies find different.

如果婴儿认为此物与之前出现物体不同,婴儿的注视时间会变长,你可以将注视时间变长,视为婴儿发现物体间区别的一种标志

耶鲁公开课 - 心理学导论课程节选

All right, this is actually kind of nice.

表示变长元素的方法了。

麻省理工公开课 - 计算机科学及编程导论课程节选

The length after a week, increased in their fingers.

一周后，他们的手指变长。

哈佛公开课 - 幸福课课程节选

They say it's terrible because they'll have a kid and the kid'll grow up freaky and then the experimenter--it's an interview situation--says, "Well, no. Remember they're both using a lot of birth control."

他们说太糟糕了，他们会生小孩的,小孩长大会变怪胎的,然后向他们提问的实验者说，“不会，他们都做了避孕措施”

耶鲁公开课 - 心理学导论课程节选