Voltaire — To learn who rules over you, simply find out who you are not allowed to criticize
Wednesday, September 11, 2013
Men who have smaller testes are more likely be better dads to their toddlers
Researchers found that fathers who had smaller testes showed increased nurturing-related brain activity in the ventral tegmental area (VTA) - an area of the brain linked to reward and parental motivation - when viewing photos of their own children. The results suggest that the biology of human males reflects a trade-off between mating effort and parenting effort, as indexed by testicular size and nurturing-related brain function, respectively.