[alternatives?]

“1) Men are a few points higher in IQ (generally)”

I think the primary reason is not the average but the standard deviation. Women are more clustered around the mean while men are much more divergent. That means the extreme values (both low and high) are mostly men.

[farming pharmer]

I think the primary reason is not the average but the standard deviation. Women are more clustered around the mean while men are much more divergent. That means the extreme values (both low and high) are mostly men.

Interesting. I've met males that I'm sure were at least one SD beyond my intelligence and some men that were 1-2 SD below. I consider myself of average intellect.

Can't say the same about women (sorry girls) and I work in a 80-90% female orientated field.

You may be on to something...