What sex is your brain?

Everyone knows the sex of their body, but what about their brain?

Hold out your right hand, place your fingers together, and compare the length of your index (first) finger and ring (third) finger.
Analysis:

The hormone ‘testosterone’ is linked with many traits traditionally seen as masculine, such as aggression, becoming frustrated when you don’t get your way, and, most important of all, social dominance. Those in highly competitive occupations, such as actors and footballers, tend to have much higher levels than those in more caring jobs, such as nurses and the clergy. Men have much greater levels of testosterone in their bodies and brains than women.

Scientists believe that the amount of testosterone we were exposed to in the womb affects the ratio of index finger length to ring finger length. The higher the testosterone exposure, the longer the ring finger. Most women's index and ring fingers are almost equal because they have been exposed to less testosterone. If women have longer ring fingers, then they have more masculine tendencies. In most men, the ring finger is longer because they have higher testosterone levels. If men have ring fingers equal in length to their index fingers, or shorter, they have less masculine tendencies because they have been exposed to slightly less testosterone.