As long as researchers retain freedom to either write their study up in English or not there’s going to be an additional publication-in-a-very-foreign-language bias.
As a rule of thumb, I would say that any research published after the early 1990s in a language other than English is most likely crap.
Why do you think it changed, and in the early 1990s specifically? (The original study I posted only examined ’90s papers and so couldn’t show any time-series like that, so it can’t be why you think that.)
As a rule of thumb, I would say that any research published after the early 1990s in a language other than English is most likely crap.
Why do you think it changed, and in the early 1990s specifically? (The original study I posted only examined ’90s papers and so couldn’t show any time-series like that, so it can’t be why you think that.)
I suppose that before the 1990s respectable Soviet scientists published primarily in Russian.