来自《耶鲁大学开放课程：心理学导论第5集第5集》

tend to fail,

通常会在这些任务中失败
and around the age of four or five kids tend to succeed.

而四岁或是五岁左右的儿童则通常会成功
There's sort of a period around the age of four, four and a half,

儿童在大约四岁四岁半时
where kids make the transition from failure to success.

会发生从失败向成功的转变
The question, by the way,

顺便说一下
was when do children-- in that video when were the--

刚才的问题是
what were the ages of the children

在影片中失败和通过任务的儿童
who failed and who passed?

他们的年龄有多大
Yes.

请讲
The question of

这个问题是
whether discriminant conditioning has been used with babies

在探究婴儿拥有什么类型的概念时
to explore what sort of concepts they have.

是否对婴儿应用了判别式条件作用