‘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
Battersea Poltergeist (1928)
Abnormal disturbances reported in a small house in Battersea, London, investigated by Harry Price.
AWARE NDE Studies
AWARE and AWARE II were large-scale studies testing for veridical perceptions recalled by hospital patients during NDEs.
Robert Bigelow and the Bigelow Institute for Consciousness Studies
Billionaire American businessman whose foundation funds research on post-mortem survival.
Christopher Robinson
British psychic said to possess precognitive dream ability of use to UK police and security services.
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.
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.
Sinclair Telepathy Experiments
A successful series of ESP drawing experiments carried out by American author Upton Sinclair and his wife Craig.
Remote Viewing
An experimental form of clairvoyance, in which a suitably trained person attempts to visualise the topography of a distant scene.
Maimonides Dream Telepathy Research
This article describes ESP dreaming experiments carried out in a New York sleep laboratory.
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.
Franek Kluski
Polish banker (1873–1943) with psychic abilities and for some years submitted to investigation as a materialization medium.
Ted Serios
Ted Serios (1918–2006) was an adept in the rare phenomenon of ‘thoughtography’ (an ability to 'think' images onto photographic film).
Oskar Estebany
Twentieth-century Hungarian-Canadian psychic healer whose abilities were demonstrated in successful laboratory experiments.
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.
AWARE NDE Studies
AWARE and AWARE II were large-scale studies testing for veridical perceptions recalled by hospital patients during NDEs.
Psychoanalysis and Psi
Psychoanalysts have often reported instances of psi occurring between patient and practitioner.
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.
Mediumship and Pathology
During the 19th and early 20th centuries, some in medicine regarded mediumship as an abnormal condition.
The Junot Sittings (Leonora Piper)
Highly evidential communications purporting to come from the surviving spirit of a deceased teenager.
Edgar Vandy Case
In this 1930s case, four mediums independently gave strikingly concordant information about a young man's death by drowning.
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.
Gretchen Gottlieb (regression case)
Case of an American woman who recalled a German life under hypnosis and seemingly spoke German.
Native American Children with Past-Life Memories
Collection of cases of the reincarnation type among Tlingit and other native North American cultures.
Swarnlata Mishra (reincarnation case)
Indian case of a girl who recalled two past lives, in relation to one of which she sang songs in a foreign language.
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.
Poltergeists (Overview)
This article provides an introduction to poltergeist research, describing major cases and theoretical perspectives.
Wilmot Apparition
19th century case in which a woman felt herself go out-of-body to her husband's ship, where she was perceived by him and another person.
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.
Cottingley Fairies
1920s hoax by two girl, who persuaded Sir Arthur Conan Doyle that they had photographed themselves playing with fairies.
UFOs/Aliens and Psi
Review of the research literature on UFO sightings and alien encounters, which may include claims of psi phenomena.
Photography and the Paranormal
Apparently paranormal images captured on film are vulnerable to claims of misinterpretation, malpractice or fraud.
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.
James McHarg
Scottish psychiatrist and medical historian (1917–2003) who studied the kinds of psychic experiences reported by his patients.
Giovanni Battista Ermacora
Italian scientist (1858–1898) who devoted much time to researching telepathy and other psychical phenomena.
Zofia Weaver
Council member of the Society for Psychical Research (b 1947) with a particular interest in the history of mediums in her native Poland.
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.
Princeton Engineering Anomalies Research (PEAR)
The PEAR lab carried out ground-breaking experimental psi research for nearly three decades.
Division of Perceptual Studies
Within the University of Virgina's Department of Psychiatry, the world's oldest extant academic body devoted to psi phenomena.
Bial Foundation
Foundation set up by Portuguese pharmaceutical giant to support research in neuroscience, psychophysiology and parapsychology.
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.
Michael Shermer
Well-known American author, media personality and career sceptic, founder of the Skeptics Society and its magazine Skeptic.
Reincarnation Case Studies: Criticisms
This article addresses objections critics have raised to the reincarnation case research of Ian Stevenson and others.
Martin Gardner
American critic of parapsychology and paranormal claims (1914–2010), a founding member of the modern sceptical movement.