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It's been known for quite some time that more prestigious journals publish less reliable #science. Now two papers provide compelling empirical evidence as to potential underlying mechanisms:
https://www.journals.uchicago.edu/doi/10.1086/733398
https://academic.oup.com/qje/advance-article/doi/10.1093/qje/qjaf010/7997678
The gist of the story is that scientists are so afraid of being scooped that they cut corners. Corner-cutting is rewarded by hi-ranking journal publications and the successful authors then teach their students how to get ahead in science.