Clairvoyance

"Clairvoyant" redirects here. For other uses, see Clairvoyant (disambiguation).
Clairvoyance
Terminology

An experiment in sensory deprivation aiming to stimulate clairvoyance
Definition The ability to gain information about an object, person, location or physical event through means other than the known senses.
See also Telepathy
ESP
Remote viewing
Psychometry

The term clairvoyance (/klerˈvɔɪəns/)[1] (from French clair meaning "clear" and voyance meaning "vision") is the alleged ability to gain information about an object, person, location or physical event through extrasensory perception.[2][3] A person who has this ability is called a clairvoyant (/klerˈvɔɪənt/)[4] ("one who sees clearly").

Claims for the existence of paranormal and psychic abilities such as clairvoyance have not been supported by scientific evidence published in high impact factor peer reviewed journals.[5] Parapsychology explores this possibility, but the existence of the paranormal is not accepted by the scientific community.[6] Parapsychology, including the study of clairvoyance, is an example of pseudoscience.[7][8][9][10]

Usage

Pertaining to the ability of clear-sightedness, clairvoyance refers to the paranormal ability to see persons and events that are distant in time or space. It can be divided into roughly three classes: precognition, the ability to perceive or predict future events, retrocognition, the ability to see past events, and remote viewing, the perception of contemporary events happening outside of the range of normal perception.[11]

Parapsychology

Early research

The earliest record of somnambulistic clairvoyance is credited to the Marquis de Puységur, a follower of Franz Mesmer, who in 1784 was treating a local dull-witted peasant named Victor Race. During treatment, Race reportedly would go into trance and undergo a personality change, becoming fluent and articulate, and giving diagnosis and prescription for his own disease as well as those of others.[12] Clairvoyance was a reported ability of some mediums during the spiritualist period of the late 19th and early 20th centuries, and psychics of many descriptions have claimed clairvoyant ability up to the present day.[13]

Character reader and clairvoyant in a British travelling show of the 1940s, collected by Arthur James Fenwick (1878–1957)

Early researchers of clairvoyance included William Gregory, Gustav Pagenstecher, and Rudolf Tischner.[14] Clairvoyance experiments were reported in 1884 by Charles Richet. Playing cards were enclosed in envelopes and a subject put under hypnosis attempted to identify them. The subject was reported to have been successful in a series of 133 trials but the results dropped to chance level when performed before a group of scientists in Cambridge. J. M. Peirce and E. C. Pickering reported a similar experiment in which they tested 36 subjects over 23, 384 trials which did not obtain above chance scores.[15]

Ivor Lloyd Tuckett (1911) and Joseph McCabe (1920) analyzed early cases of clairvoyance and came to the conclusion they were best explained by coincidence or fraud.[16][17] In 1919, the magician P. T. Selbit staged a séance at his own flat in Bloomsbury. The spiritualist Arthur Conan Doyle attended the séance and declared the clairvoyance manifestations to be genuine.[18][19]

A significant development in clairvoyance research came when J. B. Rhine, a parapsychologist at Duke University, introduced a standard methodology, with a standard statistical approach to analyzing data, as part of his research into extrasensory perception. A number of psychological departments attempted to repeat Rhine's experiments with failure. W. S. Cox (1936) from Princeton University with 132 subjects produced 25, 064 trials in a playing card ESP experiment. Cox concluded "There is no evidence of extrasensory perception either in the 'average man' or of the group investigated or in any particular individual of that group. The discrepancy between these results and those obtained by Rhine is due either to uncontrollable factors in experimental procedure or to the difference in the subjects."[20] Four other psychological departments failed to replicate Rhine's results.[21][22] It was revealed that Rhine's experiments contained methodological flaws and procedural errors.[23][24][25]

Eileen Garrett was tested by Rhine at Duke University in 1933 with Zener cards. Certain symbols that were placed on the cards and sealed in an envelope, and she was asked to guess their contents. She performed poorly and later criticized the tests by claiming the cards lacked a psychic energy called "energy stimulus" and that she could not perform clairvoyance to order.[26] The parapsychologist Samuel Soal and his colleagues tested Garrett in May, 1937. Most of the experiments were carried out in the Psychological Laboratory at the University College London. A total of over 12,000 guesses were recorded but Garrett failed to produce above chance level.[27] In his report Soal wrote "In the case of Mrs. Eileen Garrett we fail to find the slightest confirmation of Dr. J. B. Rhine's remarkable claims relating to her alleged powers of extra-sensory perception. Not only did she fail when I took charge of the experiments, but she failed equally when four other carefully trained experimenters took my place."[28]

Remote viewing

Remote viewing also known as remote sensing, remote perception, telesthesia and travelling clairvoyance is the alleged paranormal ability to perceive a remote or hidden target without support of the senses.[29]

A well known study of remote viewing in recent times has been the US government-funded project at the Stanford Research Institute during the 1970s through the mid-1990s. In 1972, Harold Puthoff and Russell Targ initiated a series of human subject studies to determine whether participants (the viewers or percipients) could reliably identify and accurately describe salient features of remote locations or targets. In the early studies, a human sender was typically present at the remote location, as part of the experiment protocol. A three-step process was used, the first step being to randomly select the target conditions to be experienced by the senders. Secondly, in the viewing step, participants were asked to verbally express or sketch their impressions of the remote scene. Thirdly, in the judging step, these descriptions were matched by separate judges, as closely as possible, with the intended targets. The term remote viewing was coined to describe this overall process. The first paper by Puthoff and Targ on remote viewing was published in Nature in March 1974; in it, the team reported some degree of remote viewing success.[30] After the publication of these findings, other attempts to replicate the experiments were carried out.[31][32] and remotely linked groups using computer conferencing.[33]

The psychologists David Marks and Richard Kammann attempted to replicate Targ and Puthoff’s remote viewing experiments that were carried out in the 1970s at the Stanford Research Institute. In a series of 35 studies, they were unable to replicate the results so investigated the procedure of the original experiments. Marks and Kammann discovered that the notes given to the judges in Targ and Puthoff's experiments contained clues as to which order they were carried out, such as referring to yesterday's two targets, or they had the date of the session written at the top of the page. They concluded that these clues were the reason for the experiment's high hit rates.[34][35] Marks was able to achieve 100 per cent accuracy without visiting any of the sites himself but by using cues.[36] James Randi has written controlled tests by several other researchers, eliminating several sources of cuing and extraneous evidence present in the original tests, produced negative results. Students were also able to solve Puthoff and Targ's locations from the clues that had inadvertently been included in the transcripts.[37]

In 1980, Charles Tart claimed that a rejudging of the transcripts from one of Targ and Puthoff’s experiments revealed an above-chance result.[38] Targ and Puthoff again refused to provide copies of the transcripts and it was not until July 1985 that they were made available for study when it was discovered they still contained sensory cues.[39] Marks and Christopher Scott (1986) wrote "considering the importance for the remote viewing hypothesis of adequate cue removal, Tart’s failure to perform this basic task seems beyond comprehension. As previously concluded, remote viewing has not been demonstrated in the experiments conducted by Puthoff and Targ, only the repeated failure of the investigators to remove sensory cues."[40]

In 1982 Robert Jahn, then Dean of the School of Engineering at Princeton University wrote a comprehensive review of psychic phenomena from an engineering perspective. His paper included numerous references to remote viewing studies at the time.[41] Statistical flaws in his work have been proposed by others in the parapsychological community and within the general scientific community.[42][43]

Scientific reception

According to scientific research, clairvoyance is generally explained as the result of confirmation bias, expectancy bias, fraud, hallucination, self-delusion, sensory leakage, subjective validation, wishful thinking or failures to appreciate the base rate of chance occurrences and not as a paranormal power.[5][44][45][46] Parapsychology is regarded by the scientific community as a pseudoscience.[47][48] In 1988, the US National Research Council concluded "The committee finds no scientific justification from research conducted over a period of 130 years, for the existence of parapsychological phenomena."[49]

Skeptics say that if clairvoyance were a reality it would have become abundantly clear. They also contend that those who believe in paranormal phenomena do so for merely psychological reasons.[50] According to David G. Myers (Psychology, 8th ed.):

The search for a valid and reliable test of clairvoyance has resulted in thousands of experiments. One controlled procedure has invited 'senders' to telepathically transmit one of four visual images to 'receivers' deprived of sensation in a nearby chamber (Bem & Honorton, 1994). The result? A reported 32 percent accurate response rate, surpassing the chance rate of 25 percent. But follow-up studies have (depending on who was summarizing the results) failed to replicate the phenomenon or produced mixed results (Bem & others, 2001; Milton & Wiseman, 2002; Storm, 2000, 2003).

One skeptic, magician James Randi, has a longstanding offer—now U.S. $1 million—“to anyone who proves a genuine psychic power under proper observing conditions” (Randi, 1999). French, Australian, and Indian groups have parallel offers of up to 200,000 euros to anyone with demonstrable paranormal abilities (CFI, 2003). Large as these sums are, the scientific seal of approval would be worth far more to anyone whose claims could be authenticated. To refute those who say there is no ESP, one need only produce a single person who can demonstrate a single, reproducible ESP phenomenon. So far, no such person has emerged. Randi’s offer has been publicized for three decades and dozens of people have been tested, sometimes under the scrutiny of an independent panel of judges. Still, nothing. "People's desire to believe in the paranormal is stronger than all the evidence that it does not exist." Susan Blackmore, "Blackmore's first law", 2004.[51]

Other related terms

The words "clairvoyance" and "psychic" are often used to refer to many different kinds of paranormal sensory experiences, but there are more specific names:

Clairsentience (feeling/touching)

In the field of parapsychology, clairsentience is a form of extra-sensory perception wherein a person acquires psychic knowledge primarily by feeling.[52] The word “clair” is French for "clear", and “sentience” is derived from the Latin sentire, “to feel”. Psychometry is related to clairsentience. The word stems from psyche and metric, which means "soul-measuring".[53]

Clairaudience (hearing/listening)

In the field of parapsychology, clairaudience [from late 17th century French clair (clear) and audience (hearing)] is a form of extra-sensory perception wherein a person acquires information by paranormal auditory means. It is often considered to be a form of clairvoyance.[54] Clairaudience is essentially the ability to hear in a paranormal manner, as opposed to paranormal seeing (clairvoyance) and feeling (clairsentience).

Clairalience (smelling)

Also known as clairescence. In the field of parapsychology, clairalience (or alternatively, clairolfactance) [presumably from late 17th century French clair (clear) and alience (smelling)] is a form of extra-sensory perception wherein a person accesses psychic knowledge through the physical sense of smell.[55]

Claircognizance (knowing)

In the field of parapsychology, claircognizance [presumably from late 17th century French clair (clear) and cognizance (< ME cognisaunce < OFr conoissance, knowledge)] is a form of extra-sensory perception wherein a person acquires psychic knowledge primarily by means of intrinsic knowledge. It is the ability to know something without a physical explanation why you know it, like the concept of mediums.

Clairgustance (tasting)

In the field of parapsychology, clairgustance is defined as a form of extra-sensory perception that allegedly allows one to taste a substance without putting anything in one's mouth. It is claimed that those who possess this ability are able to perceive the essence of a substance from the spiritual or ethereal realms through taste.

Clairenunciate (communicate)

Speak fluently in metaphors and creative in conjoining context.

See also

References

  1. ↑ http://www.oxfordlearnersdictionaries.com/definition/english/clairvoyance
  2. ↑ "Merriam-Webster Online dictionary, Retrieved 2007-10-05 "1: the power or faculty of discerning objects not present to the senses 2: ability to perceive matters beyond the range of ordinary perception: penetration"". Mw1.merriam-webster.com. Retrieved November 17, 2011.
  3. ↑ Britannica Online Encyclopedia, Retrieved 2007-10-07. The ESP entry includes clairvoyance
  4. ↑ http://www.oxfordlearnersdictionaries.com/definition/english/clairvoyant_1
  5. 1 2 Carroll, Robert Todd. (2003). "Clairvoyance". Retrieved 2014-04-30.
  6. ↑
    • Bunge, Mario. (1983). Treatise on Basic Philosophy: Volume 6: Epistemology & Methodology II: Understanding the World. Springer. p. 226. ISBN 90-277-1635-8 "Despite being several thousand years old, and having attracted a large number of researchers over the past hundred years, we owe no single firm finding to parapsychology: no hard data on telepathy, clairvoyance, precognition, or psychokinesis."
    • Stenger, Victor. (1990). Physics and Psychics: The Search for a World Beyond the Senses. Prometheus Books. p. 166. ISBN 0-87975-575-X "The bottom line is simple: science is based on consensus, and at present a scientific consensus that psychic phenomena exist is still not established."
    • Zechmeister, Eugene; Johnson, James. (1992). Critical Thinking: A Functional Approach. Brooks/Cole Pub. Co. p. 115. ISBN 0534165966 "There exists no good scientific evidence for the existence of paranormal phenomena such as ESP. To be acceptable to the scientific community, evidence must be both valid and reliable."
    • Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 144. ISBN 1-57392-979-4 "It is important to realize that, in one hundred years of parapsychological investigations, there has never been a single adequate demonstration of the reality of any psi phenomenon."
  7. ↑ "Dictionary.com "Pseudoscience"". Dictionary.reference.com. Retrieved September 22, 2012.
  8. ↑ "Stanford Encyclopedia of Philosophy "Science and Pseudo-Science"". Plato.stanford.edu. September 3, 2008. Retrieved September 22, 2012.
  9. ↑ "Science Needs to Combat Pseudoscience: A Statement by 32 Russian Scientists and Philosophers". Quackwatch.com. July 17, 1998. Retrieved September 22, 2012.
  10. ↑ "International Cultic Studies Association "Science Fiction in Pseudoscience"". Csj.org. Retrieved September 22, 2012.
  11. ↑ Melton, John. (2001). The Encyclopedia of Occultism & Parapsychology. p. 297. Gale Group, Detroit. ISBN 978-0810385702.
  12. ↑ Taves, Ann. (1999). Fits, Trances, and Visions: Experiencing Religion and Explaining Experience from Wesley to James. Princeton University Press. p. 126. ISBN 0-691-01024-2
  13. ↑ Hyman, Ray. (1985). A Critical Historical Overview of Parapsychology. In Kurtz, Paul. A Skeptic's Handbook of Parapsychology. Prometheus Books. pp. 3-96. ISBN 0-87975-300-5
  14. ↑ Roeckelein, Jon. (2006). Elsevier's Dictionary of Psychological Theories. Elsevier Science. p. 450. ISBN 0-444-51750-2
  15. ↑ Hansel, C. E. M. The Search for a Demonstration of ESP. In Paul Kurtz. (1985). A Skeptic's Handbook of Parapsychology. Prometheus Books. pp. 97-127. ISBN 0-87975-300-5
  16. ↑ McCabe, Joseph. (1920). Is Spiritualism Based On Fraud? The Evidence Given By Sir A. C. Doyle and Others Drastically Examined. Chapter The Subtle Art of Clairvoyance. London: Watts & Co. pp. 93-108
  17. ↑ Tuckett, Ivor Lloyd. (1911). The Evidence for the Supernatural: A Critical Study Made with "Uncommon Sense". Chapter Telepathy and Clairvoyance. K. Paul, Trench, Trübner. pp. 107-142
  18. ↑ Baker, Robert A. (1996). Hidden Memories: Voices and Visions From Within. Prometheus Books. p. 234. ISBN 978-1-57392-094-0
  19. ↑ Christopher, Milbourne. (1996). The Illustrated History of Magic. Greenwood Publishing Group. p. 264. ISBN 978-0-435-07016-8
  20. ↑ Cox, W. S. (1936). "An experiment in ESP". Journal of Experimental Psychology 19: 437. doi:10.1037/h0054630.
  21. ↑ Jastrow, Joseph. (1938). ESP, House of Cards. The American Scholar. Vol. 8, No. 1. pp. 13-22. "Rhine’s results fail to be confirmed. At Colgate University (40, 000 tests, 7 subjects), at Chicago (extensive series on 315 students), at Southern Methodist College (75, 000 tests), at Glasgow, Scotland (6, 650 tests), at London University (105, 000 tests), not a single individual was found who under rigidly conducted experiments could score above chance. At Stanford University it has been convincingly shown that the conditions favorable to the intrusion of subtle errors produce above-chance records which come down to chance when sources of error are eliminated."
  22. ↑ Hansel, C. E. M. The Search for a Demonstration of ESP. In Paul Kurtz. (1985). A Skeptic's Handbook of Parapsychology. Prometheus Books. pp. 105-127. ISBN 0-87975-300-5
    • Adam, E. T. (1938). "A summary of some negative experiments". Journal of Parapsychology 2: 232–236.
    • Crumbaugh, J. C. (1938). An experimental study of extra-sensory perception. Masters thesis. Southern Methodist University.
    • Heinlein, C. P; Heinlein, J. H. (1938). "Critique of the premises of statistical methodology of parapsychology". Journal of Parapsychology 5: 135–148. doi:10.1080/00223980.1938.9917558.
    • Willoughby, R. R. (1938). Further card-guessing experiments. Journal of Psychology 18: 3-13.
  23. ↑ Gulliksen, Harold. (1938). Extra-Sensory Perception: What Is It?. American Journal of Sociology. Vol. 43, No. 4. pp. 623-634. "Investigating Rhine's methods, we find that his mathematical methods are wrong and that the effect of this error would in some cases be negligible and in others very marked. We find that many of his experiments were set up in a manner which would tend to increase, instead of to diminish, the possibility of systematic clerical errors; and lastly, that the ESP cards can be read from the back."
  24. ↑ Wynn, Charles; Wiggins, Arthur. (2001). Quantum Leaps in the Wrong Direction: Where Real Science Ends...and Pseudoscience Begins. Joseph Henry Press. p. 156. ISBN 978-0-309-07309-7 "In 1940, Rhine coauthored a book, Extrasensory Perception After Sixty Years in which he suggested that something more than mere guess work was involved in his experiments. He was right! It is now known that the experiments conducted in his laboratory contained serious methodological flaws. Tests often took place with minimal or no screening between the subject and the person administering the test. Subjects could see the backs of cards that were later discovered to be so cheaply printed that a faint outline of the symbol could be seen. Furthermore, in face-to-face tests, subjects could see card faces reflected in the tester’s eyeglasses or cornea. They were even able to (consciously or unconsciously) pick up clues from the tester’s facial expression and voice inflection. In addition, an observant subject could identify the cards by certain irregularities like warped edges, spots on the backs, or design imperfections."
  25. ↑ Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 122. ISBN 978-1573929790 "The procedural errors in the Rhine experiments have been extremely damaging to his claims to have demonstrated the existence of ESP. Equally damaging has been the fact that the results have not replicated when the experiments have been conducted in other laboratories."
  26. ↑ Hazelgrove, Jenny. (2000). Spiritualism and British Society Between the Wars. Manchester University Press. p. 204. ISBN 978-0719055591
  27. ↑ Russell, A. S; Benn, John Andrews. (1938). Discovery the Popular Journal of Knowledge. Cambridge University Press. pp. 305-306
  28. ↑ Soal, Samuel. A Repetition of Dr. Rhine's work with Mrs. Eileen Garrett. Proc. S.P.R. Vol. XLII. pp. 84-85. Also quoted in Antony Flew. (1955). A New Approach To Psychical Research. Watts & Co. pp. 90-92.
  29. ↑ Blom, Jan. (2009). A Dictionary of Hallucinations. Springer. p. 451. ISBN 978-1441912220
  30. ↑ Targ, Russel; Puthoff, Harold (1974). "Information transmission under conditions of sensory shielding". Nature 251 (5476): 602–607. doi:10.1038/251602a0. PMID 4423858.
  31. ↑ Hastings, A.C.; Hurt, D.B. (October 1976). "A confirmatory remote viewing experiment in a group setting". Proceedings of the IEEE 64 (10): 1544–1545. doi:10.1109/PROC.1976.10369.
  32. ↑ Whitson, T.W.; Bogart, D.N.; Palmer, J.; Tart, C.T. (October 1976). "Preliminary experiments in group 'Remote viewing'". Proceedings of the IEEE 64 (10): 1550–1551. doi:10.1109/PROC.1976.10371.
  33. ↑ Vallee, J.; Hastings, A.C.; Askevold, G. (October 1976). "Remote viewing experiments through computer conferencing". Proceedings of the IEEE 64 (10): 1551–1552. doi:10.1109/PROC.1976.10372.
  34. ↑ Marks, David; Kammann, Richard (1978). "Information transmission in remote viewing experiments". Nature 274 (5672): 680–681. doi:10.1038/274680a0.
  35. ↑ Marks, David (1981). "Sensory cues invalidate remote viewing experiments". Nature 292 (5819): 177. doi:10.1038/292177a0.
  36. ↑ Bridgstock, Martin. (2009). Beyond Belief: Skepticism, Science and the Paranormal. Cambridge University Press. p. 106. ISBN 978-0521758932 "The explanation used by Marks and Kammann clearly involves the use of Occam's razor. Marks and Kammann argued that the 'cues' - clues to the order in which sites had been visited—provided sufficient information for the results, without any recourse to extrasensory perception. Indeed Marks himself was able to achieve 100 percent accuracy in allocating some transcripts to sites without visiting any of the sites himself, purely on the ground basis of the cues. From Occam's razor, it follows that if a straightforward natural explanation exists, there is no need for the spectacular paranormal explanation: Targ and Puthoff's claims are not justified".
  37. ↑ "James Randi Educational Foundation — An Encyclopedia of Claims, Frauds, and Hoaxes of the Occult and Supernatural". Randi.org. Retrieved 2014-04-11.
  38. ↑ Tart, Charles; Puthoff, Harold; Targ, Russell (1980). "Information Transmission in Remote Viewing Experiments". Nature 284 (5752): 191. doi:10.1038/284191a0. PMID 7360248.
  39. ↑ Terence Hines. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 136. ISBN 978-1573929790
  40. ↑ Marks, David; Scott, Christopher (1986). "Remote Viewing Exposed". Nature 319 (6053): 444. doi:10.1038/319444a0. PMID 3945330.
  41. ↑ Jahn, R.G. (February 1982). "The persistent paradox of psychic phenomena: An engineering perspective" (PDF). Proceedings of the IEEE 70 (2): 136–170. doi:10.1109/PROC.1982.12260.
  42. ↑ Stanley Jeffers (May–June 2006). "The PEAR proposition: Fact or fallacy?". Skeptical Inquirer (Committee for Skeptical Inquiry) 30.3. Retrieved 2014-01-24.
  43. ↑ George P. Hansen. "Princeton [PEAR] Remote-Viewing Experiments - A Critique". Tricksterbook.com. Retrieved 2014-04-06.
  44. ↑ Rawcliffe, Donovan. (1988). Occult and Supernatural Phenomena. Dover Publications. pp. 367-463. ISBN 0-486-20503-7
  45. ↑ Reed, Graham. (1988). The Psychology of Anomalous Experience: A Cognitive Approach. Prometheus Books. ISBN 0-87975-435-4
  46. ↑ Zusne, Leonard; Jones, Warren. (1989). Anomalistic Psychology: A Study of Magical Thinking. Lawrence Erlbaum Associates. pp. 152-168. ISBN 0-8058-0508-7
  47. ↑ Friedlander, Michael W. (1998). At the Fringes of Science. Westview Press. p. 119. ISBN 0-8133-2200-6 "Parapsychology has failed to gain general scientific acceptance even for its improved methods and claimed successes, and it is still treated with a lopsided ambivalence among the scientific community. Most scientists write it off as pseudoscience unworthy of their time."
  48. ↑ Pigliucci, Massimo; Boudry, Maarten. (2013). Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. University Of Chicago Press p. 158. ISBN 978-0-226-05196-3 "Many observers refer to the field as a "pseudoscience". When mainstream scientists say that the field of parapsychology is not scientific, they mean that no satisfying naturalistic cause-and-effect explanation for these supposed effects has yet been proposed and that the field's experiments cannot be consistently replicated."
  49. ↑ Gilovich, Thomas. (1993). How We Know What Isn't So: The Fallibility of Human Reason in Everyday Life. Free Press. p. 160. ISBN 978-0-02-911706-4
  50. ↑ French, Chis; Wilson, Krissy. (2007). Cognitive Factors Underlying Paranormal Beliefs and Experiences. In Sala, Sergio. Tall Tales About the Mind and Brain: Separating Fact From Fiction. Oxford: Oxford University Press. pp. 3-22. ISBN 978-0198568773
  51. ↑ Myers, David. (2006). Psychology. Worth Publishers; 8th edition. ISBN 978-0716764281
  52. ↑ Parapsychological Association historical terms glossary, retrieved 2006-12-17
  53. ↑ Joseph Rodes Buchanan, Manual of Psychometry : the Dawn of a New Civilization Boston, Frank H. Hodges (4th edition), 1893 p.3
  54. ↑ Parapsychological Association website, Glossary of Key Words Frequently Used in Parapsychology, Retrieved 2006-01-24
  55. ↑ "Supernatural Glossary". Ghostvillage.com. Retrieved November 17, 2011.

Further reading

External links

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