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Re:Why I no longer contribute to Racket by jagger27 on Wednesday June 16, 2021 @03:31PM (#27532480)
I wasn’t able to find any papers or studies on your exact question.

One[0] short overview paper outlines the roles CoCs play in open source. Perhaps some of the works that cite it[1] could be of use to you.

0: https://www.researchgate.net/profile/Alexander_Serebrenik/pu...

1: https://scholar.google.com/scholar?cites=6026298708957212914...

Re:Why I no longer contribute to Racket by toolz on Wednesday June 16, 2021 @03:42PM (#27532595)
I also haven't been able to find anything yet, thanks for the links, I guess the first study at least implies there isn't much (any?) research on the effectiveness yet.