Before revision: Researchers theorize that empathic emotions, or those relating to the emotions of others, arose due to reciprocal altruism, mother-child bonding, and the need to accurately estimate the future actions of conspecifics.
After revision: Researchers theorize that empathic emotions, or those relating to the emotions of others, arose due to reciprocal altruism, mother–child bonding, and the need to accurately estimate the future actions of conspecifics.