The Psi Encyclopedia is a new collection of articles and case studies about psi research, the scientific investigation of psychic phenomena. It's a work in progress, being created by the Society for Psychical Research in London. Learn more >

Search, go to Contents A-Z, or Categories, or browse below. 

Recent Additions

Survey of witchcraft beliefs and persecutions in Europe, from antiquity to the late Christian era and its twentieth century revival in the form of Wicca.


British psychology professsor and psi researcher, investigating the nature of anaomalous experiences, the psychology of belief and self-deception. He is current president of the Society for Psychical Research.

American psychic (1877-1945) famous for trance readings in which he diagnosed the cause of medical symptoms and prescribed effective remedies.

American critic of parapsychology and paranormal claims (1914-2010), considered to have been a founding member of the modern skeptical movement. 

American psychologist, amateur magician and leading critic of parapsychology, co-founder of the Committee for the Scientific Inquiry (CSI).