Gender: is there evidence for differences in male and female brains?

http://www.scientificamerican.com/article.cfm?id=how-mens-brains-are-wired-differently-than-women

How Men's Brains Are Wired Differently Than Women's Male brains have more connections within hemispheres to optimize motor skills, whereas female brains are more connected between hemispheres to combine analytical and intuitive thinking