The concept of demonic possession is central to the practice of exorcisms. Possession is often described as a state in which an individual's body and mind are taken over by an external entity, leading to changes in behavior, personality, and physical appearance. From a psychological perspective, possession can be seen as a form of dissociation, where an individual disconnects from their body or surroundings. The psychology of possession is complex and multifaceted, with various theories attempting to explain this phenomenon.