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Early parapsychological research employed the use of Zener cards in experiments designed to test for the existence of telepathic communication.

Parapsychology is a discipline that seeks to investigate the existence and causes of psychic abilities and life after death using the scientific method.[1] Parapsychological experiments have included the use of random number generators to test for evidence of precognition and psychokinesis with both human and animal subjects[2][3][4] and Ganzfeld experiments to test for extrasensory perception.[5]

While the results of such experiments are regarded by some parapsychologists as having demonstrated the existence of some forms of psychic abilities,[6] the consensus of the scientific community is that psychic abilities have not been demonstrated to exist.[7][8][9][10][11] Critics argue that methodological flaws may explain any apparent experimental successes.[12] The status of parapsychology as a science has also been disputed.[13] Many scientists regard the discipline as pseudoscience because parapsychologists continue investigation despite not having demonstrated conclusive evidence of psychic abilities in more than a century of research.[14][15][16]

Laboratory and field research is conducted through private institutions and a small number of universities worldwide.[17] Privately-funded units at universities in the United Kingdom are among the most active today.[18] In the US, interest in research peaked in the 1970s and university-based research is now slight, although private institutions still receive considerable funding from donations.[19] While parapsychological research has occasionally appeared in mainstream academic journals,[20][21][22] most of the recent research is published in a small number of niche journals.[23]

Contents

Terminology

The term parapsychology was coined in or around 1889 by philosopher Max Dessoir. It was adopted by J.B. Rhine in the 1930s as a replacement for the term psychical research in order to indicate a significant shift toward experimental methodology and academic discipline.[24] The term originates from the Greek: παρά para meaning "alongside", and psychology.

History

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Early psychical research

American psychologist and philosopher William James (1842 - 1910) was an early psychical researcher.[25]

The Society for Psychical Research (SPR) was founded in London in 1882. The formation of the SPR was the first systematic effort to organize scientists and scholars for a critical and sustained investigation of paranormal phenomena. The early membership of the SPR included philosophers, scholars, scientists, educators and politicians, such as Henry Sidgwick, Arthur Balfour, William Crookes, Rufus Osgood Mason and Charles Richet.[26]

The SPR classified its subjects of study into several areas: telepathy, hypnotism, Reichenbach's phenomena, apparitions, haunts, and the physical aspects of Spiritualism such as table-tilting and the appearance of matter from unknown sources, otherwise known as materialization. One of the first collaborative efforts of the SPR was its Census of Hallucinations, which researched apparitional experiences and hallucinations in the sane. The census was the Society's first attempt at a statistical evaluation of paranormal phenomena, and the resulting publication in 1886, Phantasms of the Living is still widely referenced in parapsychological literature today. The SPR became the model for similar societies in other European countries and the United States during the late 19th century. Largely due to the support of psychologist William James, the American Society for Psychical Research (ASPR) opened its doors in New York City in 1885.[25] The SPR and ASPR continue research in parapsychology.[27]

Rhine era

In 1911, Stanford University became the first academic institution in the United States to study extrasensory perception (ESP) and psychokinesis (PK) in a laboratory setting. The effort was headed by psychologist John Edgar Coover. In 1930, Duke University became the second major U.S. academic institution to engage in the critical study of ESP and psychokinesis in the laboratory. Under the guidance of psychologist William McDougall, and with the help of others in the department—including psychologists Karl Zener, Joseph B. Rhine, and Louisa E. Rhine—laboratory ESP experiments using volunteer subjects from the undergraduate student body began. As opposed to the approaches of psychical research, which generally sought qualitative evidence for paranormal phenomena, the experiments at Duke University proffered a quantitative, statistical approach using cards and dice. As a consequence of the ESP experiments at Duke, standard laboratory procedures for the testing of ESP developed and came to be adopted by interested researchers throughout the world.[25]

The publication of J.B. Rhine's book, New Frontiers of the Mind (1937) brought the laboratory's findings to the general public. In his book, Rhine popularized the word "parapsychology," which psychologist Max Dessoir had coined over 40 years earlier, to describe the research conducted at Duke. Rhine also founded an autonomous Parapsychology Laboratory within Duke and started the Journal of Parapsychology, which he co-edited with McDougall.[25]

Rhine, along with associate Karl Zener, had developed a statistical system of testing for ESP that involved subjects guessing what symbol, out of five possible symbols, would appear when going through a special deck of cards designed for this purpose. A percentage of correct guesses (or hits) significantly above 20% was perceived as higher than chance and indicative of psychic ability. Rhine stated in his first book, Extra-Sensory Perception (1934), that after 90,000 trials, he felt ESP is "an actual and demonstrable occurrence."[28]

The parapsychology experiments at Duke evoked much criticism from academics and others who challenged the concepts and evidence of ESP. One such criticism was that subjects were simply cheating. Illusionist Milbourne Christopher wrote years later that he felt "there are at least a dozen ways a subject who wished to cheat under the conditions Rhine described could deceive the investigator".[29] According to Christopher, Rhine did take precautions against cheating in response to criticisms of his methods, but once he did, he was unable to find the same high scores reported in earlier trials.[29] Another criticism, made by chemist Irving Langmuir, among others, was one of selective reporting. Langmuir stated that Rhine did not report scores of subjects that he suspected were intentionally guessing wrong, and that this, he felt, biased the statistical results higher than they should have been.[30]

Rhine and his colleagues attempted to address these criticisms through new experiments, articles, and books, and revisited the state of the criticism along with their responses in the book Extra-Sensory Perception After Sixty Years (1940).[31]

The administration of Duke grew less sympathetic to parapsychology, and after Rhine's retirement in 1965 parapsychological links with the university were broken. Rhine later established the Foundation for Research on the Nature of Man (FRNM) and the Institute for Parapsychology as a successor to the Duke laboratory.[25] In 1995, the centenary of Rhine's birth, the FRNM was renamed the Rhine Research Center. Today, the Rhine Research Center is a parapsychology research unit, stating that it "aims to improve the human condition by creating a scientific understanding of those abilities and sensitivities that appear to transcend the ordinary limits of space and time."[32]

Establishment of the Parapsychological Association

The Parapsychological Association (PA) was created in Durham, North Carolina, on June 19, 1957. Its formation was proposed by J. B. Rhine at a workshop on parapsychology which was held at the Parapsychology Laboratory of Duke University. Rhine proposed that the group form itself into the nucleus of an international professional society in parapsychology. The aim of the organization, as stated in its Constitution, became "to advance parapsychology as a science, to disseminate knowledge of the field, and to integrate the findings with those of other branches of science".[33]

Under the direction of anthropologist Margaret Mead, the Parapsychological Association took a large step in advancing the field of parapsychology in 1969 when it became affiliated with the American Association for the Advancement of Science (AAAS), the largest general scientific society in the world.[34] In 1979, physicist John A. Wheeler argued that parapsychology is pseudoscientific, and that the affiliation of the PA to the AAAS needed to be reconsidered.[35][36] His challenge to parapsychology's AAAS affiliation was unsuccessful.[36] Today, the PA consists of about three hundred full, associate, and affiliated members worldwide.[37]

Decade of increased research (1970s)

The affiliation of the Parapsychological Association (PA) with the American Association for the Advancement of Science, along with a general openness to psychic and occult phenomena in the 1970s, led to a decade of increased parapsychological research. During this period, other related organizations were also formed, including the Academy of Parapsychology and Medicine (1970), the Institute of Parascience (1971), the Academy of Religion and Psychical Research, the Institute of Noetic Sciences (1973), the International Kirlian Research Association (1975), and the Princeton Engineering Anomalies Research Laboratory (1979). Parapsychological work was also conducted at the Stanford Research Institute (SRI) during this time.[24]

The scope of parapsychology expanded during these years. Psychiatrist Ian Stevenson conducted much of his controversial research into reincarnation during the 1970s. Psychologist Thelma Moss devoted time to the study of Kirlian photography at UCLA's parapsychology laboratory. The influx of spiritual teachers from Asia, and their claims of abilities produced by meditation, led to research on altered states of consciousness. American Society for Psychical Research Director of Research, Karlis Osis, conducted experiments in out of body experiences. Physicist Russell Targ coined the term remote viewing for use in some of his work at SRI in 1974.[24]

The surge in paranormal research continued into the 1980s: the Parapsychological Association reported members working in more than 30 countries. Additionally, research not affiliated with the PA was being carried out in Eastern Europe and the former Soviet Union.[24]

Parapsychology today

Since the 1980s, contemporary parapsychological research has waned considerably in the United States.[38] Early research was considered inconclusive, and parapsychologists were faced with strong opposition from their academic colleagues.[24] Some effects thought to be paranormal, for example the effects of Kirlian photography (thought by some to represent a human aura), disappeared under more stringent controls, leaving those avenues of research at dead-ends.[24] Many university laboratories in the United States have closed, citing a lack of acceptance by mainstream science as the reason;[38] the bulk of parapsychology research is now confined to private institutions funded by private sources.[24] After 28 years of research, Princeton Engineering Anomalies Research Laboratory (PEAR), which studied psychokinesis, closed in 2007.[38]

Two universities in the United States currently have academic parapsychology laboratories: the Division of Perceptual Studies, a unit at the University of Virginia's Department of Psychiatric Medicine, studies the possibility of survival of consciousness after bodily death; the University of Arizona's Veritas Laboratory conducts laboratory investigations of mediums. Several private institutions, including the Institute of Noetic Sciences, conduct and promote parapsychological research. Britain leads parapsychological study in Europe, with privately funded laboratories at the universities of Edinburgh, Northampton, and Liverpool Hope, among others.[38]

Parapsychological research has also been augmented by other sub-disciplines of psychology. These related fields include transpersonal psychology, which studies transcendent or spiritual aspects of the human mind, and Anomalistic psychology, which examines paranormal beliefs and subjective anomalous experiences in traditional psychological terms.[38][39]

Research

Scope

Parapsychologists study a number of ostensible paranormal phenomena, including but not limited to:

  • Telepathy: Transfer of information on thoughts or feelings between individuals by means other than the five classical senses.
  • Precognition: Perception of information about future places or events before they occur.
  • Clairvoyance: Obtaining information about places or events at remote locations, by means unknown to current science.
  • Psychokinesis: The ability of the mind to influence matter, time, space, or energy by means unknown to current science.
  • Reincarnation: The rebirth of a soul or other non-physical aspect of human consciousness in a new physical body after death.
  • Hauntings: Phenomena often attributed to ghosts and encountered in places a deceased individual is thought to have frequented, or in association with the person's former belongings.

The definitions for the terms above may not reflect their mainstream usage, nor the opinions of all parapsychologists and their critics. For example, some critics feel that parapsychologists are engaged in the study of phenomena that disappear under stringent experimental conditions and are thus normal processes.

According to the Parapsychological Association, parapsychologists do not study all paranormal phenomena, nor are they concerned with astrology, UFOs, Bigfoot, paganism, vampires, alchemy, or witchcraft.[40]

Methodology

Parapsychologists employ a variety of approaches for the study of apparent paranormal phenomena. These methods include qualitative approaches used in traditional psychology, but also quantitative empirical methodologies. Their more controversial studies involve the use of meta-analysis in examining the statistical evidence for psi.[38]

Experimental research

Ganzfeld

Participant of a Ganzfeld experiment which proponents say may show evidence of telepathy.

The Ganzfeld (German for "whole field") is a technique used to test individuals for telepathy. The technique—a form of moderate sensory deprivation—was developed to quickly quiet mental "noise" by providing mild, unpatterned stimuli to the visual and auditory senses. The visual sense is usually isolated by creating a soft red glow which is diffused through half ping-pong balls placed over the recipient's eyes. The auditory sense is usually blocked by playing white noise, static, or similar sounds to the recipient. The subject is also seated in a reclined, comfortable position to minimize the sense of touch.[41]

In the typical Ganzfeld experiment, a "sender" and a "receiver" are isolated.[5] The receiver is put into the Ganzfeld state[41] and the sender is shown a video clip or still picture and asked to mentally send that image to the receiver. The receiver, while in the Ganzfeld, is asked to continuously speak aloud all mental processes, including images, thoughts, and feelings. At the end of the sending period, typically about 20 to 40 minutes in length, the receiver is taken out of the Ganzfeld state and shown four images or videos, one of which is the true target and three of which are non-target decoys. The receiver attempts to select the true target, using perceptions experienced during the Ganzfeld state as clues to what the mentally "sent" image might have been.

Some parapsychologists have claimed that the aggregate results of ganzfeld experiments indicate that, on average, the target image is selected by the receiver more often than would be expected by chance alone; these claims have been summarized by parapsychologist Dean Radin in his controversial book The Conscious Universe[41][42]. However, the claims are disputed since the interpretation of the aggregate data is unclear;[20][5] additionally, early Ganzfeld experiments were found to be affected by serious methodological errors.

Remote viewing

Remote viewing experiments test the ability to gather information about a remote target consisting of an object, place, or person that is hidden from the physical perception of the viewer and typically separated from the viewer by some distance. In one type of remote viewing experiment, a pool of several hundred photographs are created. One of these is randomly selected by a third party to be the target. It is then set aside in a remote location. The remote viewer attempts to sketch or otherwise describe that remote target photo. This procedure is repeated for a number of different targets. Many ways of analytically evaluating the results of this sort of experiment have been developed. One common method is to take a group of seven target photos and responses, randomly shuffle the targets and responses, and then ask independent judges to rank or match the correct targets with the participant's actual responses. This method assumes that if there were an anomalous transfer of information, the responses should correspond more closely to the correct targets than to the mismatched targets.

Several hundred such trials have been conducted by investigators over the past 25 years, including those by the Princeton Engineering Anomalies Research Laboratory (PEAR) and by scientists at SRI International and Science Applications International Corporation.[43][44] Many of these were under contract by the U.S. government as part of the espionage program Stargate Project, which terminated in 1995 having failed, in the government's eyes, to document any practical intelligence value.[45] PEAR closed its doors at the end of February 2007. Its founder, Robert G. Jahn, said of it that, "For 28 years, we’ve done what we wanted to do, and there’s no reason to stay and generate more of the same data."[46] However, physicist Robert L. Park said of PEAR, "It’s been an embarrassment to science, and I think an embarrassment for Princeton".[46]

Psychokinesis on random number generators

The advent of powerful and inexpensive electronic and computer technologies has allowed the development of fully automated experiments studying possible interactions between mind and matter. In the most common experiment of this type, a true random number generator (RNG), based on electronic or radioactive noise, produces a data stream that is recorded and analyzed by computer software. A subject attempts to mentally alter the distribution of the random numbers, usually in an experimental design that is functionally equivalent to getting more "heads" than "tails" while flipping a coin. In the RNG experiment, design flexibility can be combined with rigorous controls, while collecting a large amount of data in very short period of time. This technique has been used both to test individuals for psychokinesis and to test the possible influence on RNGs of large groups of people.[21]

Major meta-analyses of the RNG database have been published every few years since appearing in the journal Foundations of Physics in 1986.[21] PEAR founder Robert G. Jahn and his colleague Brenda Dunne say that the effect size in all cases was found to be very small, but consistent across time and experimental designs, resulting in an overall statistical significance. The most recent meta-analysis on psychokinesis was published in Psychological Bulletin, along with several critical commentaries.[47][48] It analyzed the results of 380 studies; the authors reported an overall positive effect size that was statistically significant but very small relative to the sample size and could be explained by publication bias.

Direct mental interactions with living systems

Formerly called bio-PK, "direct mental interactions with living systems" (DMILS) studies the effects of one person's intentions on a distant person's psychophysiological state.[22] One type of DMILS experiment looks at the commonly reported "feeling of being stared at." The "starer" and the "staree" are isolated in different locations, and the starer is periodically asked to simply gaze at the staree via closed circuit video links. Meanwhile, the staree's nervous system activity is automatically and continuously monitored.

Parapsychologists have interpreted the cumulative data on this and similar DMILS experiments to suggest that one person's attention directed towards a remote, isolated person can significantly activate or calm that person's nervous system. In a meta-analysis of these experiments published in the British Journal of Psychology in 2004, researchers found that there was a small but significant overall DMILS effect. However, the study also found that when a small number of the highest-quality studies from one laboratory were analyzed, the effect size was not significant. The authors concluded that although the existence of some anomaly related to distant intentions cannot be ruled out, there was also a shortage of independent replications and theoretical concepts.[22]

Near death experiences

Ascent of the Blessed by Hieronymus Bosch (after 1490) depicts a tunnel of light and spiritual figures similar to those reported by near-death experiencers.

A near-death experience (NDE) is an experience reported by a person who nearly died, or who experienced clinical death and then revived. NDEs include one or more of the following experiences: a sense of being dead; an out-of-body experience; a sensation of floating above one's body and seeing the surrounding area; a sense of overwhelming love and peace; a sensation of moving upwards through a tunnel or narrow passageway; meeting deceased relatives or spiritual figures; encountering a being of light, or a light; experiencing a life review; reaching a border or boundary; and a feeling of being returned to the body, often accompanied by reluctance.[49]

Interest in the NDE was originally spurred by the research of psychiatrists Elisabeth Kübler-Ross, George Ritchie, and Raymond Moody Jr. In 1998, Moody was appointed chair in "consciousness studies" at the University of Nevada, Las Vegas. The International Association for Near-death Studies (IANDS) was founded in 1978 to meet the needs of early researchers and experiencers within this field of research. Later researchers, such as psychiatrist Bruce Greyson, psychologist Kenneth Ring, and cardiologist Michael Sabom, introduced the study of near-death experiences to the academic setting.[49]

Some researchers, including Dr. Rick Strassman, believe that near death experiences may be related to the chemical DMT's (Dimethyltryptamine) release from the pineal gland. The chemical is released naturally during sleep, is thought to have an effect on dream content, and is used as a recreational drug. Strassman sees the chemical as a mediator for hyperdimensional experiences, and points out that experiences with the drug are comparable to NDE's.[50]

Anomalous psychology

A number of surveys have found that many people report having had experiences that could be interpreted as telepathy, precognition, and similar phenomena.[51][52] Variables that have been associated with reports of psi-phenomena include belief in the reality of psi; the tendency to have hypnotic, dissociative, and other alterations of consciousness; and, less reliably so, neuroticism, extraversion, and openness to experience. Although psi-related experiences can occur in the context of such psychopathologies as psychotic, dissociative, and other disorders, most individuals who endorse a belief in psi generally have normal intellectual functioning and lack serious psychopathology.[39]

Criticism and controversy

Questioning the validity of parapsychology research

Fabricated images of ghosts such as this were very popular in the 19th century.

Scientists critical of parapsychology assert that its extraordinary claims demand extraordinary evidence if they are to be taken seriously.[53] Many analysts of parapsychology hold that the entire body of evidence to date is of poor quality and not adequately controlled. In their view, parapsychology has not produced conclusive results. In support of this view, critics cite instances of fraud, flawed studies, and cognitive biases (such as clustering illusion, availability error, confirmation bias, illusion of control, magical thinking, and the bias blind spot)[54] as ways to explain parapsychological results.[55] Skeptics have also contended that people's desire to believe in paranormal phenomena causes them to discount strong evidence that it does not exist.[56]

The existence of parapsychological phenomena and the scientific validity of parapsychological research is disputed by independent evaluators and researchers. In 1988, the U.S. National Academy of Sciences published a report on the subject that concluded that "no scientific justification from research conducted over a period of 130 years for the existence of parapsychological phenomena."[10] In the same report, however, they also recommended monitoring some parapsychological research, such as psychokinesis on random number generators and ganzfeld effects, for possible future studies.[10] The studies at the PEAR lab, recommended for monitoring by the report, have since concluded. These studies likewise failed to elicit a positive response by the scientific community despite numerous trials.[38] A 2008 study using fMRI showed no detectable psi effect.[54]

Additionally, the methods of parapsychologists are regarded by some critics, including those who wrote the science standards for the California State Board of Education,[7] to be pseudoscientific.[57] Some of the more specific criticisms state that parapsychology does not have a clearly defined subject matter, an easily repeatable experiment that can demonstrate a psi effect on demand, nor an underlying theory to explain the paranormal transfer of information.[58] James E. Alcock, Professor of Psychology at York University - a controversial commentator on psi research[59][60][61][62] has asserted that few of parapsychology's experimental results have prompted interdisciplinary research with more mainstream sciences such as physics or biology, and that parapsychology remains an isolated science to such an extent that its very legitimacy is questionable,[63] and as a whole is not justified in being labeled "scientific"[64]. Many in the scientific community consider parapsychology a pseudoscience because it continues to explore the hypothesis that psychic abilities exist, despite a century of experimental results that fail to conclusively demonstrate that hypothesis.[14] Dr. Richard Wiseman has criticized the Parapsychological community for widespread errors in research methods including cherry-picking new procedures which may produce preferred results, explaining away unsuccessful attempted replications with claims of an "experimenter effect", data mining, and Retrospective data selection. [65]

Fraud

Stage magician and skeptic James Randi has stated that magic tricks can simulate or duplicate some supposedly psychic phenomena.

There have been instances of fraud in the history of parapsychology research. The Soal-Goldney experiments of 1941 -1943 (suggesting precognitive ability of a single participant) were long regarded as some of the best in the field because they relied upon independent checking and witnesses to prevent fraud. However, many years later, statistical evidence, uncovered and published by other parapsychologists in the field, suggested that Dr. Soal had cheated by altering some of the raw data.[63][66][67]

In 1974 a number of experiments by Walter J. Levy, J. B. Rhine's successor as director of the Institute for Parapsychology, were exposed as fraud.[68] Levy had reported on a series of successful ESP experiments involving computer-controlled manipulation of non-human subjects, including eggs and rats. His experiments showed very high positive results. Because the subjects were non-human, and because the experimental environment was mostly automated, his successful experiments avoided criticism concerning experimenter effects, and removed the question of the subject's belief as an influence on the outcome.[69] However, Levy's fellow researchers became suspicious about his methods. They found that Levy interfered with data-recording equipment, manually creating fraudulent strings of positive results. Rhine fired Levy and reported the fraud in a number of articles.[70][71]

Some instances of fraud amongst spiritualist mediums were exposed by early psychical researchers such as Richard Hodgson[72] and Harry Price.[73] In the 1920s, magician and escapologist Harry Houdini said that researchers and observers had not created experimental procedures which absolutely preclude fraud.[74]

In 1979, magician and debunker James Randi engineered a hoax, now referred to as Project Alpha. Randi recruited two young magicians and sent them under cover to Washington University's McDonnell Laboratory with the specific aim of exposing poor experimental methods and the credulity thought to be common in parapsychology. The McDonnell laboratory did not make any formal statements or publications suggesting that the effects demonstrated by the two magicians were genuine.[75] However, Randi has stated that both of his recruits deceived experimenters over a period of three years with demonstrations of supposedly psychic abilities: blowing electric fuses sealed in a box, causing a light weight paper rotor perched atop a needle-point to turn inside a bell jar, bending metal spoons sealed in a glass bottle, etc.[76] The hoax by Randi raised ethical concerns in the scientific community, eliciting criticism even among skeptical communities such as the Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP), which he helped found. Psychologist Ray Hyman, a CSICOP member, called the results "counterproductive".[75]

Criticism of experimental results

Critical analysts, including some parapsychologists, are not satisfied with experimental parapschology studies.[58][1] Some reviewers, such as psychologist Ray Hyman, contend that apparently successful experimental results in psi research are more likely due to sloppy procedures, poorly trained researchers, or methodological flaws rather than to genuine psi effects.[77][78][79][80] Within parapsychology there are disagreements over the results and methodology as well. For example, the experiments at the PEAR laboratory were criticized in a paper published by the Journal of Parapsychology,[81] in which parapsychologists independent from the PEAR laboratory concluded that these experiments "depart[ed] from criteria usually expected in formal scientific experimentation" due to "[p]roblems with regard to randomization, statistical baselines, application of statistical models, agent coding of descriptor lists, feedback to percipients, sensory cues, and precautions against cheating." They felt that the originally stated significance values were "meaningless".

A typical measure of psi phenomena is statistical deviation from chance expectation. However, critics point out that statistical deviation is, strictly speaking, only evidence of a statistical anomaly, and the cause of the deviation is not known. Hyman contends that even if psi experiments could be designed that would regularly reproduce similar deviations from chance, they would not necessarily prove psychic functioning.[82] Critics have coined the term The Psi Assumption to describe "the assumption that any significant departure from the laws of chance in a test of psychic ability is evidence that something anomalous or paranormal has occurred...[in other words] assuming what they should be proving." These critics hold that concluding the existence of psychic phenomena based on chance deviation in inadequately designed experiments is affirming the consequent or begging the question.[83]

Selection bias and meta-analysis

Selective reporting has been offered by critics as an explanation for the positive results reported by parapsychologists. Selective reporting is sometimes referred to as a "file drawer" problem, which arises when only positive study results are made public, while studies with negative or null results are not made public.[48] Selective reporting has a compounded effect on meta-analysis, which is a statistical technique that aggregates the results of many studies in order to generate sufficient statistical power to demonstrate a result that the individual studies themselves could not demonstrate at a statistically significant level. For example, a recent meta-analysis combined 380 studies on psychokinesis,[47] including data from the PEAR lab. It concluded that, although there is a statistically significant overall effect, it is not consistent and relatively few negative studies would cancel it out. Consequently, biased publication of positive results could be the cause.[38]

The popularity of meta-analysis in parapsychology has been criticized by numerous researchers[84], and is often seen as troublesome even within parapsychology itself.[84] Critics have said that parapsychologists misuse meta-analysis to create the incorrect impression that statistically significant results have been obtained that indicate the existence of psi phenomena.[85] Physicist Robert Park states that parapsychology's reported positive results are problematic because most such findings are invariably at the margin of statistical significance and that might be explained by a number of confounding effects; Park notes that such marginal results are a typical symptom of pathological science as described by Irving Langmuir.[30]

Researcher J. E. Kennedy has argued that concerns over the use of meta-analysis in science and medicine apply as well to problems present in parapsychological meta-analysis. As a post-hoc analysis, critics emphasize the opportunity the method presents to produce biased outcomes via the selection of cases chosen for study, methods employed, and other key criteria. Critics say that analogous problems with meta-analysis have been documented in medicine, where it has been shown different investigators performing meta-analyses of the same set of studies have reached contradictory conclusions.[86]

Organizations and publications

Although academically sponsored parapsychological research has declined in the United States,[38] a number of universities worldwide continue academic parapsychology programs. Among these are the Koestler Parapsychology Unit at the University of Edinburgh;[87] the Parapsychology Research Group at Liverpool Hope University;[88][89] the SOPHIA Project at the University of Arizona;[90] the Consciousness and Transpersonal Psychology Research Unit of Liverpool John Moores University;[91] the Center for the Study of Anomalous Psychological Processes at the University of Northampton;[92] and the Anomalistic Psychology Research Unit at Goldsmiths University of London.[93]

Research and professional organizations include the Parapsychological Association;[94] the Society for Psychical Research, publisher of the Journal of Society for Psychical Research;[95] the American Society for Psychical Research, publisher of the Journal of the American Society for Psychical Research;[96] the Rhine Research Center and Institute for Parapsychology, publisher of the Journal of Parapsychology;[97] the Parapsychology Foundation, publisher of the International Journal of Parapsychology;[98] and the Australian Institute of Parapsychological Research, publisher of the Australian Journal of Parapsychology.[99] The European Journal of Parapsychology is independently published.[100]

Organizations that encourage a critical examination of parapsychology and parapsychological research include the Committee for Skeptical Inquiry, publisher of the Skeptical Inquirer;[101] the James Randi Educational Foundation, founded by illusionist and skeptic James Randi,[102] and the Occult Investigative Committee of the Society of American Magicians[103] a society for professional magicians that seeks "the promotion of harmony among magicians, and the opposition of the unnecessary public exposure of magical effects."[104]

Notes

  1. ^ a b Alcock, James E.; Jahn, Robert G. (2003). "Give the Null Hypothesis a Chance" (PDF). Journal of Consciousness Studies 10 (6-7): 29–50. http://www.imprint.co.uk/pdf/Alcock-editorial.pdf. Retrieved 2007-07-30. 
  2. ^ Schmidt, Helmut (1969). "Clairvoyance Tests with a Machine'". Journal of Parapsychology 33. 
  3. ^ Schmidt, Helmut (1970). "PK Experiments with Animals as Subjects". Journal of Parapsychology 34. 
  4. ^ Schmidt, Helmut (1973). "PK Tests with a High Speed Random Number Generator'". Journal of Parapsychology 37. 
  5. ^ a b c The Ganzfeld Psi Experiments: A Critical Appraisal, Ray Hyman, Journal of Parapsychology 49, 1985.
  6. ^ What is the state-of-the-evidence for psi?, FAQ of the Parapsychological Association. Retrieved: 2009-01-07
  7. ^ a b Science Framework for California Public Schools. California State Board of Education. 1990. 
  8. ^ Wheeler, J. A. (1979). "Point of View: Drive the Pseudos Out...". Skeptical Inquirer 3: 12–13. 
  9. ^ Kurtz, P. (1978). "Is Parapsychology a Science?". Skeptical Inquirer 3: 14–32. 
  10. ^ a b c Druckman, D. and Swets, J. A. eds. (1988). Enhancing Human Performance: Issues, Theories and Techniques. National Academy Press, Washington, D.C.. p. 22. ISBN 0-309-07465-7. 
  11. ^ Reuters (5 September 2003). "Telepathy gets academic in Sweden". CNN. http://edition.cnn.com/2003/EDUCATION/09/05/offbeat.telepathy.reut/index.html. Retrieved 9 March 2009. "Despite decades of experimental research ... there is still no proof that gifts such as telepathy and the ability to see the future exist, mainstream scientists say." 
  12. ^ Hyman, R.. "Parapsychological research: A tutorial review and critical appraisal". http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel5/5/31362/01457825.pdf?arnumber=1457825. Retrieved 20 September 2008. 
  13. ^ Flew, Antony (1982), "Parapsychology: Science or Pseudoscience?", in Grim, Patrick, Philosophy of Science and the Occult 
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References

Further reading

External links


Wikibooks

Up to date as of January 23, 2010

From Wikibooks, the open-content textbooks collection

Infobox/Parapsychology
Parapsychology/Print version
Social Sciences
Psychology
Parapsychology

Parapsychology is the academic study of certain types of reported phenomena which cannot be explained by current scientific understanding. These paranormal phenomena are often popularly referred to as psychic, but parapsychology also includes phenomena such as reincarnation, which do not fall under this umbrella. Parapsychology as an academic discipline began in 1882 with the founding of the Society for Psychical Research (SPR) in London, England.

The term paranormal describes reported phenomena which cannot be explained by current scientific understanding. Parapsychologists do not study all types of paranormal phenomena, and many parapsychologists specialize in a particular area. Parapsychology does not encompass all paranormal phenomena- examples of excluded ideas include UFOs and cryptozoology. This book seeks to encompass both parapsychological and other paranormal ideologies.

This book uses the word phenomenon for the purposes of objectivity. Proponents and skeptics may use other terms that more closely fit their point of view.

This book is divided into two main sections:

Parapsychology Development stage: 25% (as of 24 January, 2008)(24 January, 2008)

This is the study of unexplained activity centered around people. This includes extra-sensory perception, street light interference, telekinesis, poltergeists etc.

Paranormal Activity Development stage: 25% (as of 21 January, 2008)(21 January, 2008)

This section addresses the paranormal- unexplained events which do not seem to revolve around a particular person. It includes apparitions, hauntings, reincarnation, near-death experiences, etc., and the methods of testing environmental changes surrounding these events.

Note to contributors

  1. This book contains a printable version. Any new chapters that are created in the main sections must be manually added to it in order for it to appear in the print version. Changes made to existing versions will appear automatically.
  2. A part of the print version are these two pages:
  3. The ESP chapter of Parapsychology requires special coding to appear in the print version properly. All ESP subpages must have their headings bumped a level lower for the print version, example:

    <noinclude>==Section==</noinclude>
    <includeonly>===Section===</includeonly>

  4. The actual page paths don't translate well to the reader, so every page has a title manually inserted. These shouldn't appear in the print version. Use this code:

    <noinclude>
    <center>'''Chapter title'''</center>
    ----
    </noinclude>

See also


Simple English

[[File:|right|thumb|256px|An experiment with taking away someone's senses to demonstrate telepathy.]] Parapsychology is the study of psychic phenomona. These phenomona involve the exchange of information between a person and their environment, without the use of the five senses. They include extrasensory perception (such as telepathy), influence of mind on matter (psychokinesis), anomalous experiences (such as past life experiences and near death experiences) and apparitions. Such things have been reported for a very long time.[1]

In 2005, Nobel Laureate Brian Josephson said that many scientists are not yet swayed by the evidence for parapsychology and the paranormal. Josephson contends that some scientists feel uncomfortable about ideas such as telepathy and that their emotions sometimes get in the way when making evaluations.[2]

Other pages

References

  1. Jane Henry (2005). Parapsychology: Research on Exceptional Experiences, Routledge, pp. 7-8.
  2. Michael A. Thalbourne and Lance Storm (2005). Parapsychology in the twenty-first century: essays on the future of psychical research McFarland, pp. 1-2.

Other websites


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