The Channeling Concept
Mediumship is the claimed ability of a person (the medium) to experience contact with spirits of the dead, angels, demons or other immaterial entities. The role of the medium is to facilitate communication with spirits who have messages to share with non-mediums. Mediums claim to be able to listen to, relay messages from, and relate conversations with spirit, to go into a trance and speak without knowledge of what is being said, to allow a spirit to control their body and speak through it, perhaps using a writing instrument (psychography or surreal automatic writing).
Mediumship is also part of the belief system of some New Age groups. In this context, and under the name “channelling“, it refers to a medium (the channel) who is said to receive messages from a “teaching-spirit”. In some cultures, mediums (or the spirits to whom they are connected) reportedly produce physical paranormal phenomena such as materialisations of spirits, apports of objects, or levitation.