Remote viewing

From Wikipedia, the free encyclopedia
Remote viewing
ClaimsThe alleged paranormal ability to perceive a remote or hidden subject without support of the senses.[1]
Year proposed1970
Original proponentsRussell Targ and Harold Puthoff
Subsequent proponentsIngo Swann, Joseph McMoneagle, Courtney Brown

Remote viewing (RV) is the practice of seeking impressions about a distant or unseen subject, purportedly sensing with the mind.[1] 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.[2] 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.[3][4] 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.[5]

Remote viewing experiments have historically been criticized for lack of proper controls and repeatability. There is no scientific evidence that remote viewing exists, and the topic of remote viewing is generally regarded as pseudoscience.[6][7][8][9][10][11]

The idea of remote viewing received renewed attention in the 1990s upon the declassification of documents related to the Stargate Project, a $20 million research program sponsored by the U.S. government that attempted to determine potential military applications of psychic phenomena. The program ran from 1975 to 1995, and ended after evaluators reached the conclusion that remote viewers consistently failed to produce any actionable intelligence information.[n 1][12]


Early background[edit]

In early occult and spiritualist literature, remote viewing was known as telesthesia and travelling clairvoyance. Rosemary Guiley described it as "seeing remote or hidden objects clairvoyantly with the inner eye, or in alleged out-of-body travel."[13]

The study of psychic phenomena by major scientists started in the mid-nineteenth century. Early researchers included Michael Faraday, Alfred Russel Wallace, Rufus Osgood Mason, and William Crookes. Their work predominantly involved carrying out focused experimental tests on specific individuals who were thought to be psychically gifted. Reports of apparently successful tests were met with much skepticism from the scientific community.[14]

In the 1930s, J. B. Rhine expanded the study of paranormal performance into larger populations, by using standard experimental protocols with unselected human subjects. But, as with the earlier studies, Rhine was reluctant to publicize this work too early because of the fear of criticism from mainstream scientists.[15]

This continuing skepticism, with its consequences for peer review and research funding, ensured that paranormal studies remained a fringe area of scientific exploration. However, by the 1960s, the prevailing counterculture attitudes muted some of the prior hostility. The emergence of what is termed "New Age" thinking and the popularity of the Human Potential Movement provoked a mini-renaissance that renewed public interest in consciousness studies and psychic phenomena and helped to make financial support more available for research into such topics.[16]

In the early 1970s, Harold Puthoff and Russell Targ joined the Electronics and Bioengineering Laboratory at Stanford Research Institute (SRI, now SRI International) where they initiated studies of the paranormal that were, at first, supported with private funding from the Parapsychology Foundation and the Institute of Noetic Sciences.[17]

In the late 1970s, the physicists John Taylor and Eduardo Balanovski tested the psychic Matthew Manning in remote viewing and the results proved "completely unsuccessful".[18]

One of the early experiments, lauded by proponents as having improved the methodology of remote viewing testing and as raising future experimental standards, was criticized as leaking information to the participants by inadvertently leaving clues.[19] Some later experiments had negative results when these clues were eliminated.[n 2]

The viewers' advice in the "Stargate project" was always so unclear and non-detailed that it has never been used in any intelligence operation.[4][n 1][12]

Decline and termination[edit]

In the early 1990s, the Military Intelligence Board, chaired by Defense Intelligence Agency chief Harry E. Soyster, appointed Army Colonel William Johnson to manage the remote viewing unit and evaluate its objective usefulness. Funding dissipated in late 1994 and the program went into decline. The project was transferred out of DIA to the CIA in 1995.

In 1995, the CIA hired the American Institutes for Research (AIR) to perform a retrospective evaluation of the results generated by the Stargate Project. Reviewers included Ray Hyman and Jessica Utts. Utts maintained that there had been a statistically significant positive effect,[21] with some subjects scoring 5–15% above chance.[n 1] Hyman argued that Utts' conclusion that ESP had been proven to exist, "is premature, to say the least."[22] Hyman said the findings had yet to be replicated independently, and that more investigation would be necessary to "legitimately claim the existence of paranormal functioning".[22] Based upon both of their studies, which recommended a higher level of critical research and tighter controls, the CIA terminated the $20 million project in 1995.[12] Time magazine stated in 1995 that three full-time psychics were still working on a $500,000-a-year budget at Fort Meade, Maryland, which would soon be closed.[12]

The AIR report concluded that no usable intelligence data was produced in the program.[n 1] David Goslin, of the American Institute for Research said, "There's no documented evidence it had any value to the intelligence community".[12]

PEAR's Remote Perception program[edit]

Beginning in the late 1970s, the Princeton Engineering Anomalies Research Lab (PEAR) carried out extensive research on remote viewing. By 1989, it had conducted 336 formal trials, reporting a composite z-score of 6.355, with a corresponding p-value of 1.04×10−10.[23] In a 1992 critique of these results, Hansen, Utts and Markwick concluded "The PEAR remote-viewing experiments depart from commonly accepted criteria for formal research in science. In fact, they are undoubtedly some of the poorest quality ESP experiments published in many years."[23] The lab responded that "none of the stated complaints compromises the PEAR experimental protocols or analytical methods" and reaffirmed their results.[24]

Following Utts' emphasis on replication and Hyman's challenge on interlaboratory consistency in the AIR report, PEAR conducted several hundred trials to see if they could replicate the SAIC and SRI experiments. They created an analytical judgment methodology to replace the human judging process that was criticized in past experiments, and they released a report in 1996. They felt the results of the experiments were consistent with the SRI experiments.[25][unreliable source?] However, statistical flaws have been proposed by others in the parapsychological community and within the general scientific community.[26]

Scientific reception[edit]

A variety of scientific studies of remote viewing have been conducted. Early experiments produced positive results, but they had invalidating flaws.[8] None of the more recent experiments have shown positive results when conducted under properly controlled conditions.[4][n 1][12][n 2][27] This lack of successful experiments has led the mainstream scientific community to reject remote viewing, based upon the absence of an evidence base, the lack of a theory which would explain remote viewing, and the lack of experimental techniques which can provide reliably positive results.[6][28][8][29]

Science writers Gary Bennett, Martin Gardner, Michael Shermer and professor of neurology Terence Hines describe the topic of remote viewing as pseudoscience.[30][31][32][33]

C. E. M. Hansel, who evaluated the remote viewing experiments of parapsychologists such as Puthoff, Targ, John B. Bisha and Brenda J. Dunne, noted that there were a lack of controls and precautions were not taken to rule out the possibility of fraud. He concluded the experimental design was inadequately reported and "too loosely controlled to serve any useful function."[34]

The psychologist Ray Hyman says that, even if the results from remote viewing experiments were reproduced under specified conditions, they would still not be a conclusive demonstration of the existence of psychic functioning. He blames this on the reliance on a negative outcome—the claims on ESP are based on the results of experiments not being explained by normal means. He says that the experiments lack a positive theory that guides as to what to control on them and what to ignore, and that "Parapsychologists have not come close to (having a positive theory) as yet".[n 3]

Hyman also says that the amount and quality of the experiments on RV are far too low to convince the scientific community to "abandon its fundamental ideas about causality, time, and other principles", due to its findings still not having been replicated successfully under careful scrutiny.[n 4]

Martin Gardner has written that the founding researcher Harold Puthoff was an active Scientologist prior to his work at Stanford University, and that this influenced his research at SRI. In 1970, the Church of Scientology published a notarized letter that had been written by Puthoff while he was conducting research on remote viewing at Stanford. The letter read, in part: "Although critics viewing the system Scientology from the outside may form the impression that Scientology is just another of many quasi-educational quasi-religious 'schemes,' it is in fact a highly sophistical and highly technological system more characteristic of modern corporate planning and applied technology".[30] Among some of the ideas that Puthoff supported regarding remote viewing was the claim in the book Occult Chemistry that two followers of Madame Blavatsky, founder of theosophy, were able to remote-view the inner structure of atoms.[30]

Michael Shermer investigated remote viewing experiments and discovered a problem with the target selection list. According to Shermer with the sketches only a handful of designs are usually used such as lines and curves which could depict any object and be interpreted as a "hit". Shermer has also written about confirmation and hindsight biases that have occurred in remote viewing experiments.[36]

Various skeptic organizations have conducted experiments for remote viewing and other alleged paranormal abilities, with no positive results under properly controlled conditions.[8]

Sensory cues[edit]

The psychologists David Marks and Richard Kammann attempted to replicate Russell Targ and Harold Puthoff's remote viewing experiments[37] 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.[38][39] According to Terence Hines:

Examination of the few actual transcripts published by Targ and Puthoff show that just such clues were present. To find out if the unpublished transcripts contained cues, Marks and Kammann wrote to Targ and Puthoff requesting copies. It is almost unheard of for a scientist to refuse to provide his data for independent examination when asked, but Targ and Puthoff consistently refused to allow Marks and Kammann to see copies of the transcripts. Marks and Kammann were, however, able to obtain copies of the transcripts from the judge who used them. The transcripts were found to contain a wealth of cues.[40]

Thomas Gilovich has written:

Most of the material in the transcripts consists of the honest attempts by the percipients to describe their impressions. However, the transcripts also contained considerable extraneous material that could aid a judge in matching them to the correct targets. In particular, there were numerous references to dates, times and sites previously visited that would enable the judge to place the transcripts in proper sequence... Astonishingly, the judges in the Targ-Puthoff experiments were given a list of target sites in the exact order in which they were used in the tests![28]

According to Marks, when the cues were eliminated the results fell to a chance level.[8] Marks was able to achieve 100 percent accuracy without visiting any of the sites himself but by using cues.[n 5] James Randi has written that 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.[20]

Marks and Kamman concluded: "Until remote viewing can be confirmed in conditions which prevent sensory cueing the conclusions of Targ and Puthoff remain an unsubstantiated hypothesis."[42] In 1980, Charles Tart claimed that a rejudging of the transcripts from one of Targ and Puthoff's experiments revealed an above-chance result.[43] 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.[31] 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."[44]

The information from the Stargate Project remote viewing sessions was vague and included irrelevant and erroneous data. The project was never useful in any intelligence operation, and it was suspected that the project managers in some cases changed the reports so they would fit background cues.[n 1]

Marks in his book The Psychology of the Psychic (2000) discussed the flaws in the Stargate Project in detail.[46] He wrote that the experiments had several flaws. The possibility of cues or sensory leakage was not ruled out, the experiments were not independently replicated, and some of the experiments were conducted in secret, making peer review impossible. He further noted that the judge, Edwin May, was also the principal investigator for the project, risking a significant conflict of interest. Marks concluded the project was nothing more than a "subjective delusion" and after two decades of research it had failed to provide any scientific evidence for remote viewing.[46]

Professor Richard Wiseman, a psychologist at the University of Hertfordshire, and a fellow of the Committee for Skeptical Inquiry (CSI) has pointed out several problems with one of the early experiments at SAIC, including information leakage. However, he indicated the importance of its process-oriented approach and of its refining of remote viewing methodology, which meant that researchers replicating their work could avoid these problems.[29] Wiseman later insisted there were multiple opportunities for participants on that experiment to be influenced by inadvertent cues and that these cues can influence the results when they appear.[19]

Selected RV study participants[edit]

  • Ingo Swann, a prominent research participant in remote viewing[47]
  • Pat Price, an early remote viewer
  • Joseph McMoneagle, an early remote viewer[48] See: Stargate Project
  • Courtney Brown, political scientist and founder of the Farsight Institute
  • David Marks, a critic of remote viewing, after finding sensory cues and editing in the original transcripts generated by Targ and Puthoff at Stanford Research Institute in the 1970s
  • Uri Geller, the subject of a study by Targ and Puthoff at Stanford Research Institute[37]

See also[edit]


  1. ^ a b c d e f Mumford, Rose and Goslin wrote, in An Evaluation of Remote Viewing: Research and Applications: "remote viewings have never provided an adequate basis for ‘actionable’ intelligence operations – that is, information sufficiently valuable or compelling so that action was taken as a result (...) a large amount of irrelevant, erroneous information is provided and little agreement is observed among viewers' reports. (...) remote viewers and project managers reported that remote viewing reports were changed to make them consistent with know background cues. While this was appropriate in that situation, it makes it impossible to interpret the role of the paranormal phenomena independently. Also, it raises some doubts about some well-publicized cases of dramatic hits, which, if taken at face value, could not easily be attributed to background cues. In at least some of these cases, there is reason to suspect, based on both subsequent investigations and the viewers' statement that reports had been "changed" by previous program managers, that substantially more background information was available than one might at first assume."[45]
  2. ^ a b From An Encyclopedia of Claims, Frauds, and Hoaxes of the Occult and Supernatural by James Randi: "The data of Puthoff and Targ were reexamined by the other researchers, and it was found that their students were able to solve the locations without use of any psychic powers, using only the clues that had inadvertently been included in the Puthoff and Targ transcripts."[20]
  3. ^ Ray Hyman wrote in an article in Skeptical Inquirer: "Because even if Utts and her colleagues are correct and we were to find that we could reproduce the findings under specified conditions, this would still be a far cry from concluding that psychic functioning has been demonstrated. This is because the current claim is based entirely upon a negative outcome—the sole basis for arguing for ESP is that extra-chance results can be obtained that apparently cannot be explained by normal means. But an infinite variety of normal possibilities exist and it is not clear than one can control for all of them in a single experiment. You need a positive theory to guide you as to what needs to be controlled, and what can be ignored. Parapsychologists have not come close to this as yet."[35]
  4. ^ Hyman also says in the Skeptical Inquirer article: "What seems clear is that the scientific community is not going to abandon its fundamental ideas about causality, time, and other principles on the basis of a handful of experiments whose findings have yet to be shown to be replicable and lawful."[35]
  5. ^ Martin Bridgstock wrote in Beyond Belief: Skepticism, Science and the Paranormal: "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".[41]


  1. ^ a b Blom, Jan. (2009). A Dictionary of Hallucinations. Springer. p. 451. ISBN 978-1441912220
  2. ^ Zusne, Leonard; Jones, Warren (1989). Anomalistic psychology: a study of magical thinking. Lawrence Erlbaum Associates. p. 167. ISBN 0805805087.
  3. ^ Kendrick Frazier. Science Confronts the Paranormal. Prometheus Books, Publishers; ISBN 978-1615926190. pp. 94–.
  4. ^ a b c Joe Nickell (March 2001), "Remotely Viewed? The Charlie Jordan Case", Skeptical Inquirer
  5. ^ Targ, Russell (2012). The Reality of ESP: A Physicist's Proof of Psychic Abilities. Quest Books. pp. 4, 14, 23. ISBN 978-0835608848.
  6. ^ a b Alcock, James. (1981). Parapsychology-Science Or Magic?: A Psychological Perspective. Pergamon Press. pp. 164–179. ISBN 978-0080257730
  7. ^ Gilovich, Thomas (1993). How We Know What Isn't So: Fallibility of Human Reason in Everyday Life. Free Press. pp. 166–173. ISBN 978-0029117064
  8. ^ a b c d e Marks, David; Kammann, Richard. (2000). The Psychology of the Psychic. Prometheus Books. ISBN 1573927988
  9. ^ Wiseman, R; Milton, J (1999). "Experiment One of the SAIC Remote Viewing Program: A critical reevaluation" (PDF). Journal of Parapsychology. 62 (4): 297–308. Retrieved 2008-06-26.* Obtained from listing of research papers on Wiseman's website
  10. ^ Gardner, Martin (2000). Did Adam and Eve Have Navels?: Debunking Pseudoscience. New York: W.W. Norton. pp. 60–67. ISBN 978-0393322385.
  11. ^ Hines, Terence (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 136. ISBN 1573929794.
  12. ^ a b c d e f Waller, Douglas (11 December 1995). "The vision thing". Time. p. 45. Archived from the original on February 9, 2007.
  13. ^ Guiley, Rosemary (1991). Harper's Encyclopedia of Mystical and Paranormal Experience. San Francisco: Harper. p. 507. ISBN 978-0062503664.
  14. ^ Hyman, Ray (1985). "A Critical Historical Overview of Parapsychology". In Kurtz, Paul (ed.). A Skeptic's Handbook of Parapsychology. Prometheus Books. pp. 3–96. ISBN 0879753005.
  15. ^ Hyman, R (June 1986). "Parapsychological research: A tutorial review and critical appraisal". Proceedings of the IEEE. 74 (6): 823–849. doi:10.1109/proc.1986.13557. S2CID 39889367.
  16. ^ Wade, N (July 13, 1973). "Psychical research: The incredible in search of credibility". Science. 181 (4095): 138–143. Bibcode:1973Sci...181..138W. doi:10.1126/science.181.4095.138. PMID 17746612.
  17. ^ Kaiser, David (2011). How the Hippies Saved Physics: Science, Counterculture, and the Quantum Revival. W.W. Norton & Company. pp. 69–71. ISBN 978-0393076363.
  18. ^ Taylor, John (1980). Science and the Supernatural: An Investigation of Paranormal Phenomena Including Psychic Healing, Clairvoyance, Telepathy, and Precognition by a Distinguished Physicist and Mathematician. Temple Smith. p. 83. ISBN 0851171915.
  19. ^ a b Wiseman, R; Milton, J (1999). "Experiment one of the SAIC remote viewing program: A critical re-evaluation. A reply to May" (PDF). Journal of Parapsychology. 63 (1): 3–14. Retrieved 2008-06-26.
    * Obtained from listing of research papers on Wiseman's website
  20. ^ a b Randi, James (n.d.) [1995 (print)]. "Remote Viewing". An Encyclopedia of Claims, Frauds, and Hoaxes of the Occult and Supernatural. Digital adaptation by Gilles-Maurice de Schryver. (Online ed.). James Randi Educational Foundation [St. Martin's Press (print)]. Retrieved 26 January 2022.
  21. ^ Utts, Jessica (1995). An assessment of the evidence for psychic functioning. Archived from the original on 13 May 2008.
  22. ^ a b Hyman, Ray. "Evaluation of a program on anomalous mental phenomena". Journal of Society for Scientific Exploration. Society for Scientific Exploration. 10 (1): Article 2. Archived from the original on June 3, 2008. Retrieved 2008-06-24.
  23. ^ a b Hansen, George P.; Utts, Jessica; Markwick, Betty (June 1992). "Critique of the PEAR remote-viewing experiments" (PDF). Journal of Parapsychology. 56.
  24. ^ Dobyns, Y.H.; Dunne, B.J.; Jahn, R.G.; Nelson, R.D. (June 1992). "Response to Hansen, Utts, and Markwick" (PDF). Journal of Parapsychology. 56.
  25. ^ Nelson, RD; Dunne, BJ; Dobyns, YH; Jahn, RG (1996). "Precognitive remote perception: Replication of remote viewing" (PDF). Journal of Scientific Exploration. Society for Scientific Exploration. 10 (1): 109–110. Archived from the original (PDF) on 2010-01-07. Retrieved 2008-06-02.
  26. ^ Jeffers, Stanley (May–June 2006). "The PEAR proposition: Fact or fallacy?". Skeptical Inquirer. Committee for Skeptical Inquiry. 30 (3). Archived from the original on 2014-02-01. Retrieved 2014-01-24.
  27. ^ "Remote Viewing". UK's Ministry of Defence. 23 February 2007 [June 2002, disclosed in 2007]. p. 94 (page 50 in second pdf). Archived from the original on 26 October 2012.
  28. ^ a b Gilovich, Thomas (1993). How We Know What Isn't So: Fallibility of Human Reason in Everyday Life. Free Press. pp. 166–173. ISBN 978-0029117064
  29. ^ a b Wiseman, R; Milton, J (1999). "Experiment One of the SAIC Remote Viewing Program: A critical reevaluation" (PDF). Journal of Parapsychology. 62 (4): 297–308. Retrieved 2008-06-26.
    * Obtained from listing of research papers on Wiseman's website
  30. ^ a b c Gardner, Martin (2000). Did Adam and Eve Have Navels?: Debunking Pseudoscience. New York: W.W. Norton. pp. 60–67. ISBN 978-0393322385.
  31. ^ a b Hines, Terence (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 136. ISBN 1573929794.
  32. ^ Bennett, Gary L. (1994). "Heretical science – Beyond the boundaries of pathological science" (PDF). Intersociety Energy Conversion Engineering Conference, 29th, Monterey, CA, Aug 7–11, 1994, Technical Papers. Pt. 3 (A94-31838 10–44). Washington, DC: American Institute of Aeronautics and Astronautics. pp. 1207–1212. Archived from the original (PDF) on 2011-12-13.
  33. ^ Shermer, Michael (2013). "Science and Pseudoscience". In Pigliucci, Massimo; Boudry, Maarten (eds.). Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. University Of Chicago Press. p. 206. ISBN 978-0226051963.
  34. ^ Hansel, C. E. M (1989). The Search for Psychic Power. Prometheus Books. pp. 160–166. ISBN 0879755164.
  35. ^ a b Hyman, Ray (March–April 1996). "The evidence for psychic functioning: Claims vs. reality". Skeptical Inquirer.
  36. ^ Shermer, Michael. (2001). The Borderlands of Science: Where Sense Meets Nonsense. Oxford University Press. pp. 8–10. ISBN 978-0198032724.
  37. ^ a b Targ, R; Puthoff, H (1974). "Information transmission under conditions of sensory shielding". Nature. 251 (5476): 602–607. Bibcode:1974Natur.251..602T. doi:10.1038/251602a0. PMID 4423858. S2CID 4152651.
  38. ^ Marks, David; Kammann, Richard (1978). "Information transmission in remote viewing experiments". Nature. 274 (5672): 680–681. Bibcode:1978Natur.274..680M. doi:10.1038/274680a0. S2CID 4249968.
  39. ^ Marks, David (1981). "Sensory cues invalidate remote viewing experiments". Nature. 292 (5819): 177. Bibcode:1981Natur.292..177M. doi:10.1038/292177a0. PMID 7242682. S2CID 4326382.
  40. ^ Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 135. ISBN 1573929794
  41. ^ Bridgstock, Martin (2009). Beyond Belief: Skepticism, Science and the Paranormal. Cambridge University Press. p. 106. ISBN 978-0521758932.
  42. ^ Hansel, C. E. M. (1980). ESP and Parapsychology: A Critical Reevaluation. Prometheus Books. p. 293
  43. ^ Tart, Charles; Puthoff, Harold; Targ, Russell (1980). "Information Transmission in Remote Viewing Experiments". Nature. 284 (5752): 191. Bibcode:1980Natur.284..191T. doi:10.1038/284191a0. PMID 7360248.
  44. ^ Marks, David; Scott, Christopher (1986). "Remote Viewing Exposed". Nature. 319 (6053): 444. Bibcode:1986Natur.319..444M. doi:10.1038/319444a0. PMID 3945330.
  45. ^ Mumford, Michael D.; Rose, Andrew M.; Goslin, David A. (29 September 1995). An Evaluation of Remote Viewing: Research and Applications (PDF). American Institutes for Research. Archived from the original (PDF) on 13 January 2017.
  46. ^ a b Marks, David. (2000). The Psychology of the Psychic (2nd Edition). Prometheus Books. pp. 71–96. ISBN 1573927988
  47. ^ Targ, Russell; Puthoff, Harold (1977). Mind-Reach: Scientists Look at Psychic Ability. Dell.
  48. ^ McMoneagle, Joseph (1997). Mind Trek: Exploring Consciousness, Time, and Space Through Remote Viewing. Hampton Roads.

Further reading[edit]

External links[edit]