Hedonism is the claim that pain and pleasure motivate us. Emotions such as joy, happiness, delight, pleasant experience etc. are all emotions that give us some sort of pleasure, now the Hedonism theory claims that these emotions motivate us do things in order to feel these emotions. Emotions that give us pain in some sort of way are seen to be emotions that motivate us to do things in order to not get this feeling of pain
Normative Hedonism is Hedonism where only pleasure has value whereas pain has disvalue but because pain has disvalue we do not motivate our self’s to avoid the pain and through pleasure causes pain. The best examples for this would be friendships where one person will do something that gives them pleasure but then could cause someone else pain which then creates grief for that person which is an emotion of pain.