Altruism: Unselfish behaviors that benefit others (e.g. helping an old lady cross the street) that are emotionally in your best interest but not logically so. Contrasts with selfish behavior (e.g. running over old lady) that is logically in your best interest but not emotionally so, and sociopathic behavior (e.g. parking on old lady) that is logically in your best interest and occurs when we can't be bothered.
