http://www.jneurosci.org/content/jneuro/15/5/3418.full.pdf http://www.jneurosci.org/content/jneuro/15/5/3418.full.pdf http://www.independent.co.uk/news/science

http://www.jneurosci.org/content/jneuro/15/5/3418.full.pdf http://www.jneurosci.org/content/jneuro/15/5/3418.full.pdf http://www.independent.co.uk/news/science/men-have-bigger-brains-than-women-research-reveals-9124103.html http://www.independent.co.uk/news/science/men-have-bigger-br... a few more result in a google search confirm this, but I don't think it's a contributing factor to intelligence.