Everything that relates to outlier characteristics will disproportionately affect more boys than girls. The more extreme the outlier the much more likely it will be a boy.

This is just basic human biology that like the GP mentioned is routinely deliberately ignored by feminism.

Are you referring to these Bell curves? :P

http://www.slideshare.net/terriko/how-does-biology-explain-t...

I think the GP is referring to differences in standard deviation, not mean, which causes the larger-deviation population to dominate at both the left and right tails.

I'm not saying the theory is right or wrong, only that people seem to have a much harder time understanding a theory based off of same means but different standard deviations than a theory based off of different means.

Totally correct.

Not one mention of variance in that presentation.

The author is either ignorant or just dishonest.

Or as Helena Cronin succinctly described men: "more dumbbells but more Nobels".