The BBC did a three part series (Brainsex, Attraction, Love) called Secrets of the Sexes. The documentary takes a look at gender and the brain. The short clip above shows the level of exposure to testosterone in the womb is a good predictor of behavior and physical ability. Make sure to watch the amazing experiment which starts at 3:32m in the video!


  1. I’ve always found myself drawn to male dominated interests and careers…and guess what? My ring finger IS longer than my index finger!

    I also test very well in visual and spatial skills 🙂

    Thanks for sharing this, definitely something to think about.