Comment Re:What's the range? (Score 1) 21
The other post linked the study.
As far as I can tell yes, your supposition that there's "averaging" going on is correct. Insofar as I can see (I skimmed it, certainly) they report roughly similar quantities of data from makes and females going into their analysis, but after that it's all lumped together.
Further, while they acknowledge in their analysis that their data is biased toward West, anglophone, rich cultures, I feel like they universalize their conclusions a little too freely.
Really fascinating stuff here, but imo their data is a bit too summarized.