This just in: Naked pictures of women cause men to objectify women. No, seriously. Just ask science!
According to this Daily Mail piece, brain scans conducted by a group of researchers at Princeton University demonstrated that when "men are shown images of women in bikinis, the part of the brain they use when thinking about DIY tools and other objects lights up," while "the region they use to try to tune into another person's thoughts and feelings tunes down."
Overall, the research showed that when men viewed pictures of scantily-clad, sexed-up ladies, they tended to think of them as "less than human."
The research was conducted at Princeton, so it's totally legit! And, we might add, a fairly brilliant excuse for a group of Ivy League scientists to get paid to look at porn for months on end. Well played, nerds. Very well played.