I cannot stop laughing about this study. Apparently I, and my boyfriend, are real.
Actually - my boyfriend would not have qualified for this study. He has only had one sexual relationship with a woman - the woman he married and is still in a happy marriage to. They would probably not qualify me as a man for the purposes of the study, since I was born female. But still, I find it an amusing study anyway.
Upon thinking further though, I found myself annoyed about the methods used. This writeup gives a little more detail, and I have some concerns.
Reactions to pornography really isn't necessarily the best way to show someone's sexual response to certain genders. I would probably show up on this test as completely gay, since I primarily look at/respond to male only porn. The female stuff I like is really limited to high quality kink porn (really anything Tristan Taormino has directed) so with normal vanilla girl-on-girl stuff I'd almost certainly be completely turned off. It's not because I don't like women. I primarily fall in LOVE with women. The best sex I have ever had is with women. ALL of my primary relationships have been with women. But I am visually much more attracted to men.
I think many bisexual people identify this way - romantically more attracted to one gender, sexually more attracted to the other. That doesn't make us not bi (or pansexual, or omnisexual etc). It just makes us complex - like all humans.