1) The document discusses whether true altruism exists or if human helping behavior is ultimately motivated by self-interest. It explores different theories on altruism including empathy-altruism theory and socio biological theory.
2) Empirical evidence is presented showing that people with high empathy will help others even at a cost to themselves, supporting the existence of true altruism, while those with low empathy only help to reduce their own distress.
3) Neuroscientific research found increased activity in brain regions associated with perspective taking in highly altruistic individuals, providing a potential biological basis for altruistic motivation.