So when you talk to class four, he says,then it is difficult to teach the little kids in class one.

VOA: standard.2010.02.25

It is very difficult to find any effect of how parents talk to their kids on how their kids learn language, particularly when it comes to babies.

家长跟儿童的说话方式,并未对儿童如何学习语言,产生任何影响,尤其是在对待婴儿的时候

耶鲁公开课 - 心理学导论课程节选