Love à la Darwin - 07 - Masculine, More Masculine, the Most

Are men really more daring than women and what has that got to do with the ring finger? The astonishing answer is that the more testosterone a foetus is exposed to in its mothers womb, the longer its ring finger will be relative to the index finger. Testosterone in the mothers womb also has other effects on a persons mental development by promoting or inhibiting the growth of certain regions of the brain masculine, more masculine, the most masculine