4 ms·

Wow, apparently the length of your ring finger is correlated with your testosterone levels.

• radiantswirl 8y ago
  The correlation is so strong that scientists can measure the fingers of sprinters and then predict who will win a race between them with near perfect accuracy, based solely on digit ratio, before the race has even begun.
• culot 8y ago
  *amniotic testosterone levels, apparently, and the ratio is supposedly unaffected by post-birth levels. "The 2D:4D digit ratio is the ratio of the length of the second (index) finger and the fourth (ring) finger. This ratio is, on average, different in men and women. (Men tend to have longer ring fingers relative to their index fingers, while women’s index fingers are about the same length as, or slightly longer than, their ring fingers.) The idea is that prenatal testosterone levels influence digit ratio."