Welcome to the Psi Encyclopedia! We aspire to provide a comprehensive introduction to academic parapsychology, which studies the range of psychic experiences collectively termed ‘psi’. The existence of psi phenomena – and the related idea that consciousness is independent of the physical body and so may survive death – is strongly disputed by materialist scientists, yet parapsychologists are convinced they have evidence for these things. The Psi Encyclopedia presents this evidence in more than 750 signed articles by over 80 authors, many of them senior academics, arranged in categories and subcategories that highlight the major interests of the field. It is owned and sponsored by the Society for Psychical Research.
Mark Boccuzzi created this short video that explains what we are about.
Featured
Titus Rivas
Dutch theoretical psychologist and philosopher (1964-2026) who studied NDEs and children who recall previous lives.
After-Death Communications (Overview)
ADCs have been interpreted through both psychological and survival-based models.
Animals in Psi Research
The psi abilities of animals have been reported in informal observations and laboratory tests.
Rhea A White
American parapsychologist, librarian, bibliographer, and editor of the Journal of the American Society for Psychical Research.
Eminent People Interested in Psi (list)
A list of some 200 scientists, thinkers, writers, and artists who took seriously the possibility of psi.
Psi Research in Brazil
This article traces the development of interest in psi phenomena and parapsychological research in Brazil.
Maróczy Mediumistic Chess Match
Match played between a living Russian grandmaster and a deceased Hungarian one.
Key Topics
Remote Viewing
An experimental form of clairvoyance, in which a suitably trained person attempts to visualise the topography of a distant scene.
Near-Death Experiences (Overview)
This article describes anomalous mental events reported by people who have survived a near-fatal accident or illness.
Society for Psychical Research (SPR)
Membership organization founded in London in 1882 for the scientific investigation of claims of psychic phenomena.
Psychokinesis Research (Overview)
Research on PK has progressed from early tests with dice to random number generators, field studies, and quantum experiments.
Clinical Parapsychology
Therapeutic approach that aims to provide support for people disturbed by anomalous event experiences.
Reincarnation: An Introduction
This introductory article covers beliefs in reincarnation, evidence for reincarnation, and sceptical views of the research.
Psychedelics and Psi
A gradual easing of restrictions means that psi research with psychedelics, once prevalent, could soon resume.
Altered States of Consciousness and Psi
ASCs have long been known to be associated with psi experiences.
Recent Additions
Augustus De Morgan
British mathematician (1806–71) who conducted experiments in mesmerism and early Spiritualism.
Haunted York
York's reputation as Britain’s most haunted city rests on a long history of reported apparitions and other anomalies.
Researcher Fraud in Experimental Parapsychology
Researcher fraud has been a problem for parapsychology, as for other sciences.
Minnie Meserve Soule
Important American trance medium (1867–1936) who worked closely with researchers for three decades.
Sleep Paralysis and Anomalous Experience
Sensed presences and apparitions have been reported while the body is immobilized.
Joseph Jastrow
Pioneering American experimental psychologist (1863–1944) briefly associated with the ASPR, although sceptical of psi.
After-Death Communications (Overview)
ADCs have been interpreted through both psychological and survival-based models.
Elwood Worcester
American Episcopal clergyman and psychologist (1862–1940) who helped found the Boston Society for Psychic Research.
Siméon Edmunds
British researcher (1917–69) concerned with hypnotism, spirit photography, parapsychology and Spiritualism.
Global Consciousness Project (GCP) 2.0
GCP 2.0 extends the original GCP with a larger network of quantum random number generators.
Global Consciousness: Theories
This article considers interpretations of data gathered by the Global Consciousness Project.
Minot Judson Savage
Unitarian minister (1841–1918) who sat with Leonora Piper and was involved with the early American Society for Psychical Research.
Presentiment Research Methods
Confirmatory studies should be preregistered and use pre-stimulus physiological data to predict stimuli.
Charles Drayton Thomas
Methodist minister (1867–1953) who studied mental mediumship, chiefly of Gladys Osborne Leonard.
Edward F Kelly
American psychologist and parapsychologist concerned with consciousness and its relation to psi and postmortem survival.
Free-Response Methods
Targets such as random images or locations allow for richer impressions than do forced-choice tests.
Children’s Near-Death Experiences
New research employs creative, participatory methods to interview children about their NDEs.
Psi Research in France
This article discusses psi research in France, from nineteenth century ‘animal magnetism’ to the present day.
Callum E Cooper
British psychologist who specializes in the study of spontaneous cases of psi phenomena.
Preventing Researcher Fraud
Preventive research practices offer the strongest protections against fraud in parapsychology.
Explore the Psi Encyclopedia
ESP & Psychokinesis
Extra-sensory perception (ESP) comprises telepathy, clairvoyance and precognition. Psychokinesis (PK) is the direct influence on matter by mind alone. Both ESP and PK have been tested in the laboratory and studied in real life situations. Together they constitute psi, in the strict sense of the term. Subcategories group together overviews and general topics in psi studies, tests of ESP and PK, and researcher biographies.
Lotte Plaat
Dutch clairvoyant (1895–1979) able to discern facts about events associated with an object and its owner by holding it (psychometry).
GNM Tyrrell
English mathematician, physicist and radio engineer (1879–1952), remembered for his theoretical treatise on apparitions.
Unusual Ways of Testing for Psi
Psi has been tested in more ways than card guessing, dice throwing, remote viewing and ganzfeld.
Mind & Body
This category contains articles that treat consciousness in relation to the body. Subcategories focus on consciousness and psi; dreams and psi; and distant healing and psychotherapy. Also included are sitter groups and macro-psychokinesis as well as poltergeists, often assumed to relate to discarnate entities but now known more often to have living agents. A final subgroup is concerned with out-of-body and near-death experiences and events reported on the threshold of death.
Arigo
Brazilian celebrated for making diagnoses, prescriptions, even surgery, while possessed by ‘spirit doctors’ in a trance state.
Stella Cranshaw
London nurse (1900–1986) who produced abundant phenomena in investigative sittings organized in the 1920s by Harry Price.
Out-of-Body Experiences (OBEs)
Reviews research on OBEs, the sense of having separated from the body and of viewing it from the outside.
Survival of Death
Life continued in a spiritual or purely mental form after bodily death is a staple of religious beliefs worldwide, and likely is as old as humanity. The question of evidence for it has been central to the Society for Psychical Research since its founding in 1882. Subcategories focus on hauntings and apparitions and on psychic (also called mental) mediumship.
Stans (Switzerland) Poltergeist
Mid-19 century poltergeist case, in which disturbances tormented a Swiss family for weeks.
‘Raymond’ by Oliver Lodge
The soldier son of Sir Oliver Lodge killed in battle in 1915 thereafter communicated with his family through mediums.
After-Death Communications (Overview)
ADCs have been interpreted through both psychological and survival-based models.
Reincarnation
Reincarnation beliefs are widespread in the world and in recent decades researchers have found what they believe is evidence of them through the study of people (mainly children) who claim to have lived before. Subcategories highlight case studies, past life regression, and biographies of major researchers.
Patterns in Reincarnation Cases
Universal, near-universal and culture-linked patterns can be discerned in the dataset of reincarnation cases.
Erlendur Haraldsson
Icelandic psychologist (1931–2020) who investigated end-of-life phenomena, mediumship, and reincarnation.
Past-Life Memories from Before 1900
Accounts of past-life memory documented in historical sources share many features with cases studied more recently.
Researchers & Authors
Here can be found more than 300 biographical profiles of key figures who have been involved in psi research and parapsychology as field investigators, experimentalists, theorists and commentators. The biographies are grouped in subcategories by 30-year age cohorts, highlighting contemporaries.
Alexander Batthyány
Austrian philosopher, cognitive scientist and researcher concerned with phenomena surrounding death and dying.
Markus Maier
German psychologist whose work in consciousness theory has extended to include experiments in psychokinesis and precognition.
JB Priestley
English novelist and playwright (1894–1984), who often dealt with time and precognition, topics of central interest to psychical research.
Organizations
The oldest organizations devoted to parapsychology were member organizations like the Society for Psychical Research, established in London in 1882. Since JB Rhine founded the Parapsychology Laboratory at Duke University in 1930, there have been university-based units as well. This category comprises both historical and contemporary bodies concerned with research and education in parapsychology.
Boston Society for Psychic Research
Organisation that split from the American Society for Psychical Research in 1925, reuniting with it in 1941.
Windbridge Research Center
Non-profit research institute based in Tucson, Arizona, dedicated to the rigorous study of mental mediums.
Institute of Paranormal Psychology (IPP)
Argentinian organization established in 1994 that conducts psi research and provides educational resources.
Sceptical Views
Sceptics argue that psychics and mediums achieve their effects by trickery, that psychic experience is an illusory effect caused by a combination of brain misperceptions and confirmation bias, and that evidence of psi in laboratory tests can be attributed to poor methodology. This category includes biographies of leading sceptics as well as general articles discussing their allegations.
Ray Hyman
American psychologist, amateur magician and leading sceptic, co-founder of the Committee for the Scientific Inquiry (CSI).
Susan J Blackmore
British psychologist, consciousness researcher and psi sceptic, who has frequently appeared in the media promoting her views.
Martin Gardner
American critic of parapsychology and paranormal claims (1914–2010), a founding member of the modern sceptical movement.
General Topics
This category contains articles on a variety of topics that do not fit well in any of the main categories, from dowsing to crop circles and other anomalistic phenomena, the Miscellaneous Anomalistic subcategory. Other subcategories list articles on psychics and mystic and on important articles, books and journals in the field of parapsychology.
Crop Circles
The intricate patterns that sometimes appear in crop fields have been attributed to various factors, including supernatural ones..
Dermo-Optical Perception
This article describes research into claims of being able to perceive colours through touch alone.
Henry Gross
American game warden and dowser (1895–1979) who located water for landowners in his home state of Maine and in Bermuda.