And how are you able to rule out that societal or environmental effects are the primary driver? How is your argument not circular, that observed differences are therefore the result of biology?
I merely stated that biology, should not be ignored when judging very large samples.
There are cross sex cognitive tests at which women and men tend to perform differently, such as spatial awareness or speed perception and many others.
What's the environmental or cultural factor behind the fact that a female's brain, on average, is able to judge speed much more correctly than a male?
It is not possible to rule out unfalsifiable hypotheses.