‘Psi’, the Greek letter ψ, is the modern term for psychic phenomena. The existence of psi – and the related idea that consciousness is independent of the physical body (and so may survive bodily death) – are disputed, as they seem to violate well-established natural laws. However, researchers are convinced they have evidence for these things, posing a challenge to materialist science. The Psi Encyclopedia presents their reasoning in over 700 signed articles by 86 authors, many of them senior academics. It also provides links to books, articles and videos that are free to view.
Featured
Stephen E Braude
American philosopher and parapsychologist (1945–2026) remembered for his field investigations of apparent psychokinesis.
Meditation and Psi
Traditional Yogic teachings state that a person who attains a higher state of consciousness will manifest psychic powers.
Psychedelics and Psi
A gradual easing of restrictions means that psi research with psychedelics, once prevalent, could soon resume.
Psi Research in China
Recent experimental and theoretical work in China includes successful attempts to train ESP abilities in blind children.
Clinical Parapsychology
Therapeutic approach that aims to provide support for people disturbed by anomalous event experiences.
Psi for Financial Gain
Anecdotal accounts and lab tests suggest that psi can at times be used to advantage in gambling and financial speculation.
Coover Telepathy Experiments
Early telepathy experiments, once thought a failure, now considered statistically significant.
Key Topics
Psychology and Parapsychology
Explores the overlap between psychology and parapsychology, such as personality and other variables linked to psi.
Eminent People Interested in Psi (list)
A list of some 200 scientists, thinkers, writers, and artists who took seriously the possibility of psi.
Remote Viewing
An experimental form of clairvoyance, in which a suitably trained person attempts to visualise the topography of a distant scene.
Near-Death Experience (Overview)
This article describes anomalous mental events reported by people who have survived a near-fatal accident or illness.
Reincarnation: An Introduction
This introductory article covers beliefs in reincarnation, evidence for reincarnation, and sceptical views of the research.
Psychokinesis Research
Overview of experimental research on mind-matter interaction, commonly referred to as psychokinesis (PK).
American Society for Psychical Research (ASPR)
The oldest parapsychological organization in the United States, founded in 1884, now practically defunct.
Animals in Psi Research
Describes informal observations, early tests and modern lab experiments looking at animals' psychic capabilities.
Recent Additions
The Telepathy Tapes
Podcast series exploring claims that certain nonspeaking autistic individuals possess telepathic abilities.
Psychische Studien (journal)
Early German psychical research journal (1874–1925) that contained reports of experiences and investigations.
Allan Kardec
French educator (1804–1869) whose work with mediums led to the development of Spiritism, today highly popular in Brazil.
Neuroimaging and Psi
Recent advances in brain imaging technology have been exploited in several lines of psi research.
Center for Research on Consciousness and Anomalous Psychology (CERCAP)
Under Etzel Cardeña at Lund University.
Reincarnation and the Population Problem
The idea that increases in population are a problem has been addressed in various ways.
Witchcraft
Traces the development of witchcraft as the socially proscribed practice of magic, from Antiquity to the present day.
Planned Reincarnations
Planned reincarnation suggests that next-life circumstances can be chosen not just between lives but prior to death.
Alexander Nikolayevich Aksakov
First Russian psychical researcher, a government official who studied mediums and psychics.
FJM Stratton
British soldier and astrophysics professor (1881-1961) who investigated hauntings and other psychic phenomena.
Àlex Gómez-Marín
Alex Gomez-Marin is a Spanish physicist and neuroscientist with research interests in parapsychology.
Garret Yount
American researcher who explores the links between molecular biology and aspects of consciousness, including energy healing.
Kim Penberthy
Kim Penberthy is a clinical psychologist at the University of Virginia with research interests in psi and spirituality.
Arnaud Delorme
American neuroscientist who has carried out experiments exploring the relation between consciousness and psi.
Brian Laythe
American psychologist and parapsychologist whose research interests include paranormal beliefs and experiences.
Marieta Pehlivanova
Marieta Pehlivanova is a researcher at the University of Virginia, with interests relating to near-death and related experiences.
Ulf Holmberg
Swedish economist who has investigated the potential impact of human consciousness on random physical systems.
Cold Reading
Discusses the psychological strategies that can be used to simulate a mediumistic communication or psychic reading.
Philip J Cozzolino
American researcher who has investigated psychological aspects related to parapsychological phenomena.
Explore the Psi Encyclopedia
ESP & Psychokinesis
The term extra-sensory perception (ESP), introduced in the 1930s, comprises telepathy, clairvoyance and precognition, acknowledging that these categories may considerably overlap. Psychokinesis is the direct influence on matter by mind alone, without physical action. All have been successfully tested in the laboratory and studied in real life situations.
Psychometry
Clairvoyance facilitated by holding an object, which enables a psychic to describe key incidents associated with it.
Dreams and ESP
This article describes the experience and study of ESP in dreams, notably of telepathic interactions and precognitions of future events.
The Brain and Psi
Describes how electroencephalography (EEG) and brain imaging technology are being used to demonstrate psychic functioning.
Gifted People
Most people may only experience a psychic event once or twice in their lives, but for a few it’s a natural ability, which some develop as a professional career. Two types feature in the Psi Encyclopedia: those who have demonstrated telepathy, clairvoyance, precognition or psychokinesis in some way, and those who believe themselves to be in communication with the deceased.
Zancigs (telepathy stage act)
A mind-reading act performed by a Danish-American couple that may have included some genuine telepathy.
Ingo Swann
American artist (1933–2013) whose psychic ability led him to participate in successful ESP and PK experiments in the 1970s.
Sean Harribance
Trinidadian psychic of Indian descent who participated in ESP and PK experiments with American researchers from the 1970s.
Mind & Body
This category contains articles that treat consciousness in relation to the body. Major topics covered include healing and psychotherapy; dreams and dreaming; and out-of-body experiences, end-of-life experiences, and near-death experiences, all of which suggest that consciousness may have an existence independent of the physical body.
Christine Beauchamp
Noted case of multiple personality disorder reported by American psychologist Morton Prince in 1906.
Altered States of Consciousness and Psi
Altered states of consciousness have long been known to be associated with psi experiences.
Spirit Release Therapy
Clinical treatment used with patients who appear to be ‘possessed’ by harmful spirit entities.
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. This category includes articles on mediumship as well as general topics related to the survival question. Other survival-related topics appear under other category headings.
The Junot Sittings (Leonora Piper)
Highly evidential communications purporting to come from the surviving spirit of a deceased teenager.
Did Robert Swain Gifford Survive Death?
Analysis of the Thompson-Gifford case of ostensible possession as evidence of survival.
Goligher Circle
Northern Irish Spiritualist group said to produce striking psychic phenomena, the subject of research in the 1910s.
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. This category includes case studies and overviews of phenomena that appear regularly in the cases. Some articles deal with past life regression as well.
Jagdish Chandra (reincarnation case)
An Indian boy remembered a previous life as the pampered son of a corrupt official in a distant city.
Reincarnation: An Introduction
This introductory article covers beliefs in reincarnation, evidence for reincarnation, and sceptical views of the research.
Testing Children’s Past-Life Knowledge
Children who remember past lives are often set tests to try to establish the truth of their claims.
Haunting
Location-based hauntings have been relatively little studied by parapsychologists, but the frequent incidence of apparitional episodes (the appearance of a deceased family member) attracted the attention of early researchers. Much interest has also centred on so-called ‘poltergeist’ episodes, of powerful domestic disturbances now often attributed to involuntary psychokinetic effects by living agents.
Borley Rectory
Until its destruction by fire in 1939, Borley Rectory was the focus of persistent claims of poltergeist disturbances and haunting phenomena.
Versailles ‘Time-Slip’
An experience in the gardens of Versailles, described by two Englishwomen in their 1911 book An Adventure.
Why Do Ghosts Wear Clothes?
Sceptics use the fact that apparitions appear fully clad as reason to doubt them. This article discusses why they might.
General Topics
This section lists articles on a variety of topics that are not found in any of the main categories, from brain research and altered states of consciousness to dowsing, crop circles and other anomalistic phenomena.
Eyewitness Testimony (Analysis)
This article discusses the reliability of eyewitness testimony about paranormal events.
Anthropology and Psi Research
Anthropologists have long been fascinated by belief in the supernatural, a near universal aspect of human culture.
Cottingley Fairies
1920s hoax by two girl, who persuaded Sir Arthur Conan Doyle that they had photographed themselves playing with fairies.
Scientists & 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. Many have scientific and academic backgrounds – in psychology, physics, biology, philosophy, engineering and other disciplines.
Wellington Zangari
Brazilian psychologist whose research interests include anomalistic psychology, hypnosis and altered states of consciousness.
Dennis Bardens
English journalist and author (1911–2004), founder of the BBC news programme Panorama.
Richard S Broughton
Experimental psi researcher concerned with cognitive and evolutionary aspects of ESP.
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.
Bial Foundation
Foundation set up by Portuguese pharmaceutical giant to support research in neuroscience, psychophysiology and parapsychology.
International Consciousness Research Laboratories (ICRL)
Dedicated to understanding consciousness with a view to improving humanity’s future.
London Dialectical Society
19th-century rationalist debating club whose 1871 investigative report showed certain PK activity to be genuine.
Scepticism
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.
James Alcock
Canadian psychology professor, amateur magician and career psi sceptic, member of the Executive Council for the Committee for Skeptical Inquiry.
Reincarnation Case Studies: Criticisms
This article addresses objections critics have raised to the reincarnation case research of Ian Stevenson and others.
Fraud in Parapsychology and Other Sciences
The assumption that psi researchers are more likely to commit fraud than other scientists is wrong.