Everybody feels physical pain at some time in their life. Although physical pain can protect us from seriously harming ourselves, pain can also be harmful. Studies have revealed that unrelieved pain can have a long lasting harmful effect on both physical and psychological health (Australian and New Zealand College of Anaesthetists, 2006). Therefore, pain analgesia has long been an important issue in various fields, such as medical, biological and psychological field. In the current study, pain analgesia was studied through a psychological phenomenon called precebo illusion
