This is an interesting article about a famous experiment that has been hugely influential on our perceptions of educational development of children. Despite its influence, there are some questions about the rigor of the study itself and the veracity of some of its conclusions.
This offers an interesting study on what it means to do “good science” in the natural sciences but also how hard it is to produce knowledge that stands up to scrutiny.
https://www.npr.org/sections/ed/2018/06/01/615188051/lets-stop-talking-about-the-30-million-word-gap
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