Mediumship is a term used mostly in spiritualism to denote the ability to produce psi phenomena of a mental or physical nature.http://parapsych.org/historical_terms.html Parapsychological Association website, Glossary of Key Words Frequently Used in Parapsychology, Retrieved January 24, 2006 Mediumship often involves communication between a human instrument, known as a medium, and one or more discarnate, spirit personalities. It may also involve communication of discarnate entities through the body of the medium or through psi phenomena produced through or by the medium's psychic abilities.Online Encyclopedia Briticannica, http://encyclopedia.jrank.org/MEC_MIC/MEDIUM.html “Mediumâ€â€First Spiritual Temple, http://www.fst.org/mediumship.htm “What is Mediumship†Mediumship is a phenomenon studied in parapsychology. As with all paranormal phenomena, mediumship is a subject of extreme controversy.