Take a look at your left hand, palm facing towards you with your fingers next to each other. Keeping your fingers straight, which finger is longer on the left hand: the index finger or the ring finger? Now do the same with your right hand. Measure the length of your index finger vs. your ring finger
Is there some research showing that these relationships between testosterone exposure / relative finger length are causation and not simply correlated?
Is there some research showing that these relationships between testosterone exposure / relative finger length are causation and not simply correlated?