Some people have researched this. I remember reading "The Half-Life of Facts: Why Everything We Know Has an Expiration Date" by Arbesman, and IIRC psychology p

Some people have researched this. I remember reading "The Half-Life of Facts: Why Everything We Know Has an Expiration Date" by Arbesman, and IIRC psychology papers had some of the lowest half-lives of all the sciences. In math the half-life of a paper was something like 85 years, but in pysch it was closer to 10. I forget the exact statistics and don't have the book here but it was pretty interesting. Scientometrics and Eurekometrics are two areas of research that delve into this sort of thing more.