Dream telepathy is the purported ability to communicate telepathically with another person while one is dreaming. [1] Mainstream scientific consensus rejects dream telepathy as a real phenomenon. Parapsychological experiments into dream telepathy have not produced replicable results. [2] [3] The first person in modern times to claim to document telepathic dreaming was Sigmund Freud. [4] In the 1940s, it was the subject of the Eisenbud-Pederson-Krag-Fodor-Ellis controversy, named after the preeminent psychoanalysts of the time who were involved: Jule Eisenbud, Geraldine Pederson-Krag, Nandor Fodor, and Albert Ellis. [5]
The notion and speculation of communication via dreaming was first mooted in psychoanalysis by Sigmund Freud in 1921. [6] He produced a model to express his ideas about telepathic dreaming. [4] His 1922 paper Dreams and Telepathy is reproduced in the book Psychoanalysis and the Occult (1953) and was intended to be a lecture to the Vienna Psycho-Analytical Society, although he never delivered it. [6] Freud considered that a connection between telepathy and dreams could be neither proven nor disproven. He was distinctly suspicious of the whole idea, noting that he himself had never had a telepathic dream. (His two dreams that were potentially telepathic, where he dreamed of the deaths of a son and of a sister-in-law, which did not occur, he labeled as "purely subjective anticipations".) His ideas were not widely accepted at the time, but he continued to publicly express his interest and findings about telepathic dreaming. He also observed that he had not encountered any evidence of dream telepathy in his patients. [6] [7] Freud claims neutrality about the phenomenon itself, states that the sleep milieu has special likely properties for it if it does exist, and discounts all of the cases presented to him on standard psychoanalytic grounds (e.g. neurosis, transference, etc.). [8]
In the 1940s, Jule Eisenbud, Geraldine Pederson-Krag and Nandor Fodor described alleged cases of dream telepathy. Albert Ellis regarded their conclusions to have been based upon flimsy evidence, and thought that they could be better explained by bias, coincidence and unconscious cues than by dream telepathy. He also accused them of an emotional involvement in the notion, resulting in their observations and judgement being clouded. [9] [10] Psychologist L. Börje Löfgren also criticised dream telepathy experiments of Eisenbud. He stated that coincidence was a more likely explanation and the "assumption of paranormal forces to explain them is unnecessary." [11]
There have been many experiments done to test the validity of dream telepathy and its effectiveness, but with significant issues of blinding. Many test subjects find ways to communicate with others to make it look like telepathic communication. Attempts to cut off communication between the agent, sender, and receiver of information failed because subjects found ways to get around blindfolds no matter how intricate and covering they were. [12] In studies at the Maimonides Medical Center in Brooklyn, New York led by Stanley Krippner and Montague Ullman, patients were monitored and awakened after a period of REM then separated to study the claimed ability to communicate telepathically. They concluded the results from some of their experiments supported dream telepathy. [4]
The picture target experiments that were conducted by Krippner and Ullman were criticized by C. E. M. Hansel. According to Hansel there were weaknesses in the design of the experiments in the way in which the agent became aware of their target picture. Only the agent should have known the target and no other person until the judging of targets had been completed; however, an experimenter was with the agent when the target envelope was opened. Hansel also wrote there had been poor controls in the experiment as the main experimenter could communicate with the subject. [13]
An attempt to replicate the experiments that used picture targets was carried out by Edward Belvedere and David Foulkes. The finding was that neither the subject nor the judges matched the targets with dreams above chance level. [14] Results from other experiments by Belvedere and Foulkes were also negative. [3]
In 2003, Simon Sherwood and Chris Roe wrote a review that claimed support for dream telepathy at Maimonides. [15] However, James Alcock noted that their review was based on "extreme messiness" of data. Alcock concluded the dream telepathy experiments at Maimonides have failed to provide evidence for telepathy and "lack of replication is rampant." [16]
The psychologist and noted skeptic Richard Wiseman took part in a dream telepathy experiment. It was conducted by Caroline Watt at a sleep laboratory in an attempt to replicate the results of Krippner and Ullman. The experiment was a complete failure. According to Wiseman, "after monitoring about twenty volunteers for several nights on end, the study didn't discover any evidence in support of the supernatural." [17]
Clairvoyance is the magical ability to gain information about an object, person, location, or physical event through extrasensory perception. Any person who is claimed to have such ability is said to be a clairvoyant.
Extrasensory perception or ESP, also called sixth sense, is a claimed paranormal ability pertaining to reception of information not gained through the recognized physical senses, but sensed with the mind. The term was adopted by Duke University psychologist J. B. Rhine to denote psychic abilities such as intuition, telepathy, psychometry, clairvoyance, clairaudience, clairsentience, empathy and their trans-temporal operation as precognition or retrocognition.
Parapsychology is the study of alleged psychic phenomena and other paranormal claims, for example, those related to near-death experiences, synchronicity, apparitional experiences, etc. Criticized as being a pseudoscience, the majority of mainstream scientists reject it. Parapsychology has also been criticised by mainstream critics for many of its practitioners claiming that their studies are plausible in spite of there being no convincing evidence for the existence of any psychic phenomena after more than a century of research.
Telepathy is the purported vicarious transmission of information from one person's mind to another's without using any known human sensory channels or physical interaction. The term was first coined in 1882 by the classical scholar Frederic W. H. Myers, a founder of the Society for Psychical Research (SPR), and has remained more popular than the earlier expression thought-transference.
Precognition is the purported psychic phenomenon of seeing, or otherwise becoming directly aware of, events in the future.
A ganzfeld experiment is an assessment used by parapsychologists that they contend can test for extrasensory perception (ESP) or telepathy. In these experiments, a "sender" attempts to mentally transmit an image to a "receiver" who is in a state of sensory deprivation. The receiver is normally asked to choose between a limited number of options for what the transmission was supposed to be and parapsychologists who propose that such telepathy is possible argue that rates of success above the expectation from randomness are evidence for ESP. Consistent, independent replication of ganzfeld experiments has not been achieved, and, in spite of strenuous arguments by parapsychologists to the contrary, there is no validated evidence accepted by the wider scientific community for the existence of any parapsychological phenomena. Ongoing parapsychology research using ganzfeld experiments has been criticized by independent reviewers as having the hallmarks of pseudoscience.
Remote viewing (RV) is the practice of seeking impressions about a distant or unseen subject, purportedly sensing with the mind. Typically a remote viewer is expected to give information about an object, event, person or location that is hidden from physical view and separated at some distance. Physicists Russell Targ and Harold Puthoff, parapsychology researchers at Stanford Research Institute (SRI), are generally credited with coining the term "remote viewing" to distinguish it from the closely related concept of clairvoyance. According to Targ, the term was first suggested by Ingo Swann in December 1971 during an experiment at the American Society for Psychical Research in New York City.
Helmut Schmidt was a German-born physicist and parapsychologist whose experiments on extrasensory perception were widely criticized for machine bias, methodological errors and lack of replication. Critics also noted that necessary precautions were not taken to rule out the possibility of fraud.
The Princeton Engineering Anomalies Research (PEAR) was a research program at Princeton University that studied parapsychology. Established in 1979 by then Dean of Engineering Robert G. Jahn, PEAR conducted formal studies on two primary subject areas, psychokinesis (PK) and remote viewing. Owing to the controversial nature of the subject matter, the program had a strained relationship with Princeton and was considered by the administration and some faculty to be an embarrassment to the university. Critics suggested that it lacked scientific rigor, used poor methodology, and misused statistics, and characterized it as pseudoscience. PEAR closed in February 2007, being incorporated into the "International Consciousness Research Laboratories" (ICRL).
Joseph Banks Rhine, usually known as J. B. Rhine, was an American botanist who founded parapsychology as a branch of psychology, founding the parapsychology lab at Duke University, the Journal of Parapsychology, the Foundation for Research on the Nature of Man, and the Parapsychological Association. Rhine wrote the books Extrasensory Perception and Parapsychology: Frontier Science of the Mind.
Montague Ullman was a psychiatrist, psychoanalyst and parapsychologist who founded the Dream Laboratory at the Maimonides Medical Center in Brooklyn, New York and for over three decades promoted public interest in dreams and dream sharing groups.
Stanley Krippner is an American psychologist and parapsychologist. He received a B.S. degree from the University of Wisconsin–Madison in 1954 and M.A. (1957) and Ph.D. (1961) degrees from Northwestern University.
Sensory leakage is a term used to refer to information that transferred to a person by conventional means during an experiment into ESP.
Samuel George Soal (1889–1975) was a British mathematician and parapsychologist. He was charged with fraudulent production of data in his work in parapsychology.
Nandor Fodor was a British and American parapsychologist, psychoanalyst, author and journalist of Hungarian origin.
In psychology, anomalistic psychology is the study of human behaviour and experience connected with what is often called the paranormal, with few assumptions made about the validity of the reported phenomena.
Extrasensory Perception is a 1934 book written by parapsychologist Joseph Banks Rhine, which discusses his research work at Duke University. Extrasensory perception is the ability to acquire information shielded from the senses, and the book was "of such a scope and of such promise as to revolutionize psychical research and to make its title literally a household phrase".
Charles Edward Mark Hansel was a British psychologist most notable for his criticism of parapsychological studies.
Leonid Leonidovich Vasiliev (1891–1966) was a Russian Soviet parapsychologist and physiologist.
Jule Eisenbud was an American psychiatrist, author and researcher known for his research into parapsychology.