Scott Simpson on why men’s ring fingers are so long

Why most men’s ring fingers are so long

National Geographic: A recent study tested the hypothesis that hormones directly cause fingers to grow differently in males and females—generally, a longer ring finger than index finger in men; the opposite for women. “This isn’t just an interesting curiosity that’s focused on the hand—it really says something about the behavioral and development biology of adults,” said Scott Simpson, professor of anatomy.