I’m finding it a bit hard to draw that conclusion from this when there’s no precisely-one-male-present condition, and I don’t see any mention of any experiments that did do that in the actual article, either. It could just be due to the presence of a male, and not the number of them.
Perhaps more importantly, it’s also not clear that what pornography men like should correlate with what causes them to produce more motile sperm!
I’m finding it a bit hard to draw that conclusion from this when there’s no precisely-one-male-present condition, and I don’t see any mention of any experiments that did do that in the actual article, either. It could just be due to the presence of a male, and not the number of them.
Perhaps more importantly, it’s also not clear that what pornography men like should correlate with what causes them to produce more motile sperm!