The researchers then had 40 participants from each of the two cultures (80 total) look through 3,600 of those animations each. The participants labeled every one of the animations as showing either “pain,” “orgasm,” or “other.” They then ranked the animation's intensity from “very weak” to “very strong.”
Aww, I was hoping they'd give their participants orgasms instead of labeling images. I feel cheated.
https://files.facepunch.com/forum/upload/58120/a8a0e534-d3e8-4335-9b21-627e5fe16f08/pnas.1807862115.sm03.mov
Looks like the Japanese have some catching up to do in their doujinshi...
This is the research I want my tax money to go towards.
I just want to say that the Asian orgasm face is very rapey.
participants expected
That would be the telling part. This is more about ingrained aesthetics than any kind of physiological anything.
I don't remember if I've read this here or somewhere else, but a user explained that (in Japan at least), women are taught that sex is naughty and they shouldn't crave for it. It turns a lot of western people off because Japanese girls are constantly asking for you to stop during sex, despite the fact that they actually want you to keep going. It's just different cultures I guess.