The document discusses theories of altruism and helping behavior. It covers:
1) Social exchange theory which views helping as transactions that aim to maximize rewards and minimize costs. Internal rewards like positive emotions and reducing guilt also motivate helping.
2) Social norms like reciprocity and social responsibility influence helping. Reciprocity means helping those who help you, while social responsibility means helping those in need regardless of rewards.
3) Evolutionary theories suggest helping family (kin selection) and one's group (group selection) enhances gene survival. Indirect reciprocity means helping to establish a good reputation.
4) Genuine altruism refers to truly selfless helping with no expectation of rewards.