‘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 psi 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
A list of some 200 scientists, thinkers, writers, and artists who took seriously the possibility of psi phenomena.
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)
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
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.
Jürgen Kornmeier
German parapsychologist with research interests in perception, altered states and consciousness.
James E Kennedy
American psi researcher specializing in experimental research, methodology and theoretical development.
Metal Bending Research
Survey of research into claims that cutlery and other metal objects can potentially be bent by mind force alone.
Jack Houck
American engineer (1939–2013) noted for his mass demonstrations of psychokinesis at metal bending ‘parties’.
Center for Research on Consciousness and Anomalous Psychology (CERCAP)
Swedish research organization headed by Etzel Cardeña.
Marina Weiler
Marina Weiler is a Brazilian neuroscientist who studies anomalous experiences in terms of neuroscience.
David Acunzo
David Acunzo is a neuroscientist based at the University of Virginia, whose research encompasses topics relevant to parapsychology.
Richard James Lucido
American psychologist whose experiments support the idea that consciousness causes the collapse of the wave function.
Larry Dossey
Larry Dossey is an American physician and author of books about psychic experiences, healing and nonlocal consciousness.
Jon Taylor
Cambridge-trained scientist who has developed physical theories of precognition and intuition, bridging quantum physics and neuroscience.
Jeff Tarrant
American psychologist and neurofeedback specialist who has carried out experiments with psychics, mediums and energy healers.
Helané Wahbeh
Research director at the Institute of Noetic Sciences, pursuing a scientific exploration of consciousness that includes practical applications.
Gabriel Guerrer
Gabriel Guerrer is a Brazilian experimental physicist who has investigated the possible influence of consciousness on matter.
Wilhelm Wundt
German psychologist whose scepticism of psi phenomena was motivated by religious concerns.
Apollonius of Tyana
Itinerant first-century preacher and healer reputed to have performed miracles and supernatural feats.
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.
Dreams and ESP
This article describes the study of psi in dreams, notably of telepathic interactions and precognition of future events.
Jaytee (Pet Telepathy)
Describes experiments that appeared to show a telepathic link between a dog and its owner.
Psi Research in Russia
Limited but significant psi research has been carried out in Russia since the nineteenth century.
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.
Miguel Alberto Mantilla
Mexican boy (b 1904) with a remarkable ability to calculate calendar dates at high speed, rarely making mistakes.
Margery (Mina Stinson Crandon)
Controversial American physical medium who caused a split in the ASPR in the 1930s.
Hester Travers Smith (Hester Dowden)
British automatist who believed she was in contact with the deceased Oscar Wilde.
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.
Near-Death Experiences – Paranormal Aspects
List of NDEs with confirmed clairvoyance and other paranormality.
Healing at a Distance (DMILS Research)
Since the 1980s, parapsychologists have studied distant mental interactions with living systems.
Religious Levitation
Reports of individuals being seen, spontaneously and involuntarily, to rise into the air and remain suspended
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.
Is Xenoglossy Evidence of Survival?
Xenoglossy in mediumship is less indicative of survival than some researchers assume.
Physicalism and the Soul
Explores the nature of souls, afterlives, and possible gods compatible with modern physicalist science.
Did Robert Swain Gifford Survive Death?
Analysis of the Thompson-Gifford case of ostensible possession as evidence of survival.
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.
Reincarnation Cases with Sex Change
Memories of a life as a member of the opposite sex are often accompanied by cross-sex behaviours and identifications.
Wael Kiwan (reincarnation case)
Lebanese Druze case involving a child who recalled the life of an identified individual who died by suicide in the USA.
Purnima Ekanayake (reincarnation case)
This article describes a Sri Lankan girl who remembered a life as a male incense maker and exhibited cross-sex behaviours.
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.
Cideville Poltergeist
Mid-nineteenth century French poltergeist case, with testimonies given in court about the phenomena.
Stans (Switzerland) Poltergeist
Mid-19 century poltergeist case, in which disturbances tormented a Swiss family for weeks.
Theories About Collective Apparitions
Apparitions perceived by more than one person provide some theoretical challenges.
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.
Eminent People Interested in Psi
A list of some 200 scientists, thinkers, writers, and artists who took seriously the possibility of psi phenomena.
Kirlian Photography
Photographic technique pioneered in Russia that reveals light radiating from living organisms and other objects.
Crop Circles
The intricate patterns that sometimes appear in crop fields have been attributed to various factors, including supernatural ones..
Scientists & Authors
Here can be found some 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.
William T Stead
Nineteenth-century British journalist, author, social reformer and medium, who wrote about psychic experiences and postmortem survival.
York Dobyns
A long-term member of the research team at the Princeton Engineering Anomalies Research (PEAR) laboratory.
Reginaldo Hiraoka
Brazilian philosopher and psychologist with research interests in ganzfeld ESP and collective influence on random number generators.
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.
Australian Institute of Parapsychological Research (AIPR)
Australia’s oldest extant psi research organization, founded in Sydney in 1977.
Emotion and Motivation Laboratory
Laboratory which conducts psi research, based at the University of Munich, Germany.
Center for Research on Consciousness and Anomalous Psychology (CERCAP)
Swedish research organization headed by Etzel Cardeña.
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
Addresses the objections critics have raised to the research of Ian Stevenson and others.
Richard Wiseman
British psychology professor, media personality and bestselling author who is a high-profile critic of parapsychology.