Paranormal events are purported phenomena described in popular culture, folk, and other non-scientific bodies of knowledge, whose existence within these contexts is described as beyond normal experience or scientific explanation.
|Part of a series on the|
Proposals regarding the paranormal are different from scientific hypotheses or speculations extrapolated from scientific evidence because scientific ideas are grounded in empirical observations and experimental data gained through the scientific method. In contrast, those who argue for the existence of the paranormal explicitly do not base their arguments on empirical evidence but rather on anecdote, testimony, and suspicion. Notable paranormal beliefs include those that pertain to extrasensory perception (for example, telepathy), spiritualism and the pseudosciences of ghost hunting, cryptozoology, and ufology.
The term "paranormal" has existed in the English language since at least 1920. The word consists of two parts: para and normal. The definition implies that the scientific explanation of the world around us is 'normal' and anything that is above, beyond, or contrary to that is 'para'.
On the classification of paranormal subjects, Terence Hines in his book Pseudoscience and the Paranormal (2003) wrote:
|“||The paranormal can best be thought of as a subset of pseudoscience. What sets the paranormal apart from other pseudosciences is a reliance on explanations for alleged phenomena that are well outside the bounds of established science. Thus, paranormal phenomena include extrasensory perception (ESP), telekinesis, ghosts, poltergeists, life after death, reincarnation, faith healing, human auras, and so forth. The explanations for these allied phenomena are phrased in vague terms of "psychic forces", "human energy fields", and so on. This is in contrast to many pseudoscientific explanations for other nonparanormal phenomena, which, although very bad science, are still couched in acceptable scientific terms.||”|
In traditional ghostlore and fiction featuring ghosts, a ghost is a manifestation of the spirit or soul of a person. Alternative theories expand on that idea and include belief in the ghosts of deceased animals. Sometimes the term "ghost" is used synonymously with any spirit or demon, however in popular usage the term typically refers to a deceased person's spirit.
The belief in ghosts as souls of the departed is closely tied to the concept of animism, an ancient belief which attributed souls to everything in nature. As the 19th-century anthropologist George Frazer explained in his classic work, The Golden Bough (1890), souls were seen as the creature within that animated the body. Although the human soul was sometimes symbolically or literally depicted in ancient cultures as a bird or other animal, it was widely held that the soul was an exact reproduction of the body in every feature, even down to clothing the person wore. This is depicted in artwork from various ancient cultures, including such works as the ancient Egyptian Book of the Dead (ca. (1550 BCE), which shows deceased people in the afterlife appearing much as they did before death, including the style of dress.
Although the evidence for ghosts is largely anecdotal, the belief in ghosts throughout history has remained widespread and persistent.
The possibility of extraterrestrial life is not, by itself, a paranormal subject. Many scientists are actively engaged in the search for unicellular life within the solar system, carrying out studies on the surface of Mars and examining meteors that have fallen to Earth. Projects such as SETI are conducting an astronomical search for radio activity that would show evidence of intelligent life outside the solar system. Scientific theories of how life developed on Earth allow for the possibility that life developed on other planets as well. The paranormal aspect of extraterrestrial life centers largely around the belief in unidentified flying objects and the phenomena said to be associated with them.
Early in the history of UFO culture, believers divided themselves into two camps. The first held a rather conservative view of the phenomena, interpreting them as unexplained occurrences that merited serious study. They began calling themselves "ufologists" in the 1950s and felt that logical analysis of sighting reports would validate the notion of extraterrestrial visitation.
The second camp consisted of individuals who coupled ideas of extraterrestrial visitation with beliefs from existing quasi-religious movements. These individuals typically were enthusiasts of occultism and the paranormal. Many had backgrounds as active Theosophists, Spiritualists, or were followers of other esoteric doctrines. In contemporary times, many of these beliefs have coalesced into New Age spiritual movements.
Both secular and spiritual believers describe UFOs as having abilities beyond what are considered possible according to known aerodynamic constraints and physical laws. The transitory events surrounding many UFO sightings also limits the opportunity for repeat testing required by the scientific method. Acceptance of UFO theories by the larger scientific community is further hindered by the many possible hoaxes associated with UFO culture.
Approaching the paranormal from a research perspective is often difficult because of the lack of acceptable physical evidence from most of the purported phenomena. By definition, the paranormal does not conform to conventional expectations of nature. Therefore, a phenomenon cannot be confirmed as paranormal using the scientific method because, if it could be, it would no longer fit the definition. (However, confirmation would result in the phenomenon being reclassified as part of science.) Despite this problem, studies on the paranormal are periodically conducted by researchers from various disciplines. Some researchers simply study the beliefs in the paranormal regardless of whether the phenomena are considered to objectively exist. This section deals with various approaches to the paranormal: anecdotal, experimental, and participant-observer approaches and the skeptical investigation approach.
An anecdotal approach to the paranormal involves the collection of stories told about the paranormal.
Charles Fort (1874–1932) is perhaps the best-known collector of paranormal anecdotes. Fort is said to have compiled as many as 40,000 notes on unexplained paranormal experiences, though there was no doubt many more. These notes came from what he called "the orthodox conventionality of Science", which were odd events originally reported in magazines and newspapers such as The Times and scientific journals such as Scientific American, Nature and Science. From this research Fort wrote seven books, though only four survive: The Book of the Damned (1919), New Lands (1923), Lo! (1931) and Wild Talents (1932); one book was written between New Lands and Lo!, but it was abandoned and absorbed into Lo!
Reported events that he collected include teleportation (a term Fort is generally credited with coining); poltergeist events; falls of frogs, fishes, and inorganic materials of an amazing range; crop circles; unaccountable noises and explosions; spontaneous fires; levitation; ball lightning (a term explicitly used by Fort); unidentified flying objects; mysterious appearances and disappearances; giant wheels of light in the oceans; and animals found outside their normal ranges (see phantom cat). He offered many reports of OOPArts, the abbreviation for "out of place" artefacts: strange items found in unlikely locations. He is perhaps the first person to explain strange human appearances and disappearances by the hypothesis of alien abduction and was an early proponent of the extraterrestrial hypothesis.
Fort is considered by many as the father of modern paranormalism, which is the study of the paranormal.
The magazine Fortean Times continues Charles Fort's approach, regularly reporting anecdotal accounts of the paranormal.
Such anecdotal collections, lacking the reproducibility of empirical evidence, are not amenable to scientific investigation. The anecdotal approach is not a scientific approach to the paranormal because it leaves verification dependent on the credibility of the party presenting the evidence. Nevertheless, it is a common approach to investigating paranormal phenomena.
Experimental investigation of the paranormal has been conducted by parapsychologists. J. B. Rhine popularized the now famous methodology of using card-guessing and dice-rolling experiments in a laboratory in the hopes of finding evidence of extrasensory perception. However, it was revealed that Rhine's experiments contained methodological flaws and procedural errors.
In 1957, the Parapsychological Association was formed as the preeminent society for parapsychologists. In 1969, they became affiliated with the American Association for the Advancement of Science. Criticisms of the field were focused in the founding of the Committee for the Scientific Investigation of Claims of the Paranormal (1976), now called the Committee for Skeptical Inquiry, and its periodical, Skeptical Inquirer. Eventually, more mainstream scientists became critical of parapsychology as an endeavor, and statements by the National Academies of Science and the National Science Foundation cast a pall on the claims of evidence for parapsychology. Today, many cite parapsychology as an example of a pseudoscience. Parapsychology has been criticized for continuing investigation despite being unable to provide convincing evidence for the existence of any psychic phenomena after more than a century of research.
By the 2000s, the status of paranormal research in the United States had greatly declined from its height in the 1970s, with the majority of work being privately funded and only a small amount of research being carried out in university laboratories. In 2007, Britain had a number of privately funded laboratories in university psychology departments. Publication remained limited to a small number of niche journals, and to date there have been no experimental results that have gained wide acceptance in the scientific community as valid evidence of the paranormal.
While parapsychologists look for quantitative evidence of the paranormal in laboratories, a great number of people immerse themselves in qualitative research through participant-observer approaches to the paranormal. Participant-observer methodologies have overlaps with other essentially qualitative approaches as well, including phenomenological research that seeks largely to describe subjects as they are experienced, rather than to explain them.
Participant-observation suggests that by immersing oneself in the subject being studied, a researcher is presumed to gain understanding of the subject. Criticisms of participant-observation as a data-gathering technique are similar to criticisms of other approaches to the paranormal, but also include an increased threat to the objectivity of the researcher, unsystematic gathering of data, reliance on subjective measurement, and possible observer effects (observation may distort the observed behavior). Specific data gathering methods, such as recording EMF readings at haunted locations have their own criticisms beyond those attributed to the participant-observation approach itself.
The participant-observer approach to the paranormal has gained increased visibility and popularity through reality television programs like Ghost Hunters, and the formation of independent ghost hunting groups that advocate immersive research at alleged paranormal locations. One popular website for ghost hunting enthusiasts lists over 300 of these organizations throughout the United States and the United Kingdom.
Skeptical scientific investigation
Scientific skeptics advocate critical investigation of claims of paranormal phenomena: applying the scientific method to reach a rational, scientific explanation of the phenomena to account for the paranormal claims, taking into account that alleged paranormal abilities and occurrences are sometimes hoaxes or misinterpretations of natural phenomena. A way of summarizing this method is by the application of Occam's razor, which suggests that the simpler solution is usually the correct one. The standard scientific models give the explanation that what appears to be paranormal phenomena is usually a misinterpretation, misunderstanding, or anomalous variation of natural phenomena, rather than an actual paranormal phenomenon.
The Committee for Skeptical Inquiry, formerly the Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP), is an organization that aims to publicize the scientific, skeptical approach. It carries out investigations aimed at understanding paranormal reports in terms of scientific understanding, and publishes its results in its journal, the Skeptical Inquirer.
Richard Wiseman, of The Committee for Skeptical Inquiry, draws attention to possible alternative explanations for perceived paranormal activity in his article, The Haunted Brain. While he recognizes that approximately 15% of people believe they have experienced an encounter with a ghost, he reports that only 1% report seeing a full-fledged ghost while the rest report strange sensory stimuli, such as seeing fleeting shadows or wisps of smoke, or the sensation of hearing footsteps or feeling a presence. Wiseman makes the claim that, rather than experiencing paranormal activity, it is activity within our own brains that creates these strange sensations.
Michael Persinger proposed that ghostly experiences could be explained by stimulating the brain with weak magnetic fields. Swedish psychologist Pehr Granqvist and his team, attempting to replicate Persinger's research, determined that the paranormal sensations experienced by Persinger's subjects were merely the result of suggestion, and that brain stimulation with magnetic fields did not result in ghostly experiences.
Oxford University Justin Barrett has theorized that "agency" — being able to figure out why people do what they do — is so important in everyday life, that it is natural for our brains to work too hard at it, thereby detecting human or ghost-like behaviour in everyday meaningless stimuli.
James Randi, an investigator with a background in illusion, feels that the simplest explanation for those claiming paranormal abilities is often trickery, illustrated by demonstrating that the spoon bending abilities of psychic Uri Geller can easily be duplicated by trained stage magicians. He is also the founder of the James Randi Educational Foundation and its million dollar challenge that offered a prize of US$1,000,000 to anyone who could demonstrate evidence of any paranormal, supernatural or occult power or event, under test conditions agreed to by both parties. Despite many declarations of supernatural ability, the prize was never claimed.
In anomalistic psychology, paranormal phenomena have naturalistic explanations resulting from psychological and physical factors which have sometimes given the impression of paranormal activity to some people, in fact, where there have been none. The psychologist David Marks wrote that paranormal phenomena can be explained by magical thinking, mental imagery, subjective validation, coincidence, hidden causes, and fraud. According to studies some people tend to hold paranormal beliefs because they possess psychological traits that make them more likely to misattribute paranormal causation to normal experiences. Research has also discovered that cognitive bias is a factor underlying paranormal belief.
Many studies have found a link between personality and psychopathology variables correlating with paranormal belief. Some studies have also shown that fantasy proneness correlates positively with paranormal belief.
Bainbridge (1978) and Wuthnow (1976) found that the most susceptible people to paranormal belief are those who are poorly educated, unemployed or have roles that rank low among social values. The alienation of these people due to their status in society is said to encourage them to appeal to paranormal or magical beliefs.
Research has associated paranormal belief with low cognitive ability, low IQ and a lack of science education. Intelligent and highly educated participants involved in surveys have proven to have less paranormal belief. Tobacyk (1984) and Messer and Griggs (1989) discovered that college students with better grades have less belief in the paranormal.
In a case study (Gow, 2004) involving 167 participants the findings revealed that psychological absorption and dissociation were higher for believers in the paranormal. Another study involving 100 students had revealed a positive correlation between paranormal belief and proneness to dissociation. A study (Williams et al. 2007) discovered that "neuroticism is fundamental to individual differences in paranormal belief, while paranormal belief is independent of extraversion and psychoticism". A correlation has been found between paranormal belief and irrational thinking.
In an experiment Wierzbicki (1985) reported a significant correlation between paranormal belief and the number of errors made on a syllogistic reasoning task, suggesting that believers in the paranormal have lower cognitive ability. A relationship between narcissistic personality and paranormal belief was discovered in a study involving the Australian Sheep-Goat Scale.
De Boer and Bierman wrote:
A psychological study involving 174 members of the Society for Psychical Research completed a delusional ideation questionnaire and a deductive reasoning task. As predicted, the study showed that "individuals who reported a strong belief in the paranormal made more errors and displayed more delusional ideation than skeptical individuals". There was also a reasoning bias which was limited to people who reported a belief in, rather than experience of, paranormal phenomena. The results suggested that reasoning abnormalities may have a causal role in the formation of paranormal belief.
Findings have shown in specific cases that paranormal belief acts as a psychodynamic coping function and serves as a mechanism for coping with stress. Survivors from childhood sexual abuse, violent and unsettled home environments have reported to have higher levels of paranormal belief. A study of a random sample of 502 adults revealed paranormal experiences were common in the population which were linked to a history of childhood trauma and dissociative symptoms. Research has also suggested that people who perceive themselves as having little control over their lives may develop paranormal beliefs to help provide an enhanced sense of control.
Gender differences in surveys on paranormal belief have reported women scoring higher than men overall and men having greater belief in UFOs and extraterrestrials. Surveys have also investigated the relationship between ethnicity and paranormal belief. In a sample of American university students (Tobacyk et al. 1988) it was found that people of African descent have a higher level of belief in superstitions and witchcraft while belief in extraterrestrial life forms was stronger among people of European descent. Otis and Kuo (1984) surveyed Singapore university students and found Chinese, Indian and Malay students to differ in their paranormal beliefs, with the Chinese students showing greater skepticism.
According to American surveys analysed by (Bader et al. 2011) African Americans have the highest belief in the paranormal and while the findings are not uniform the "general trend is for whites to show lesser belief in most paranormal subjects".
Polls show that about fifty percent of the United States population believe in the paranormal. Robert L. Park says a lot of people believe in it because they "want it to be so".
A 2013 study that utilized a biological motion perception task discovered a "relation between illusory pattern perception and supernatural and paranormal beliefs and suggest that paranormal beliefs are strongly related to agency detection biases".
Some scientists have investigated possible neurocognitive processes underlying the formation of paranormal beliefs. In a study (Pizzagalli et al. 2000) data demonstrated that "subjects differing in their declared belief in and experience with paranormal phenomena as well as in their schizotypal ideation, as determined by a standardized instrument, displayed differential brain electric activity during resting periods." Another study (Schulter and Papousek, 2008) wrote that paranormal belief can be explained by patterns of functional hemispheric asymmetry that may be related to perturbations during fetal development.
It was also realized that people with higher dopamine levels have the ability to find patterns and meanings where there aren't any. This is why scientists have connected high dopamine levels with paranormal belief.
Some scientists have criticised the media for promoting paranormal claims. In a report (Singer and Benassi, 1981) wrote that the media may account for much of the near universality of paranormal belief as the public are constantly exposed to films, newspapers, documentaries and books endorsing paranormal claims while critical coverage is largely absent. According to Paul Kurtz "In regard to the many talk shows that constantly deal with paranormal topics, the skeptical viewpoint is rarely heard; and when it is permitted to be expressed, it is usually sandbagged by the host or other guests." Kurtz described the popularity of public belief in the paranormal as a "quasi-religious phenomenon", a manifestation of a transcendental temptation, a tendency for people to seek a transcendental reality that cannot be known by using the methods of science. Kurtz compared this to a primitive form of magical thinking.
Terence Hines has written that on a personal level, paranormal claims could be considered a form of consumer fraud as people are "being induced through false claims to spend their money—often large sums—on paranormal claims that do not deliver what they promise" and uncritical acceptance of paranormal belief systems can be damaging to society.
While the validity of the existence of paranormal phenomena is controversial and debated passionately by both proponents of the paranormal and by skeptics, surveys are useful in determining the beliefs of people in regards to paranormal phenomena. These opinions, while not constituting scientific evidence for or against, may give an indication of the mindset of a certain portion of the population (at least among those who answered the polls). The number of people worldwide who believe in parapsychological powers has been estimated to be 3 to 4 billion.
A survey conducted in 2006 by researchers from Australia's Monash University sought to determine what types of phenomena that people claim to have experienced and the effects these experiences have had on their lives. The study was conducted as an online survey with over 2,000 respondents from around the world participating. The results revealed that around 70% of the respondents believe to have had an unexplained paranormal event that changed their life, mostly in a positive way. About 70% also claimed to have seen, heard, or been touched by an animal or person that they knew was not there; 80% have reported having a premonition, and almost 50% stated they recalled a previous life.
Polls were conducted by Bryan Farha at Oklahoma City University and Gary Steward of the University of Central Oklahoma in 2006. They found fairly consistent results compared to the results of a Gallup poll in 2001.
|Phenomena||Farha-Steward (2006)||Gallup (2001)||Gallup (2005)|
|Belief||Not sure||Disbelief||Belief||Not sure||Disbelief||Belief||Not sure||Disbelief|
|Psychic, Spiritual healing||56||26||18||54||19||26||55||17||26|
|Extraterrestrials visited Earth in the past||17||34||49||33||27||38||24||24||51|
|Clairvoyance and Prophecy||24||33||43||32||23||45||26||24||50|
A 1996 Gallup poll estimated that 71% of the people in the United States believed that the government was covering up information about UFOs. A 2002 Roper poll conducted for the Sci Fi channel reported that 56% thought UFOs were real craft and 48% that aliens had visited the Earth.
A 2001 National Science Foundation survey found that 9 percent of people polled thought astrology was very scientific, and 31 percent thought it was somewhat scientific. About 32% of Americans surveyed stated that some numbers were lucky, while 46% of Europeans agreed with that claim. About 60% of all people polled believed in some form of Extra-sensory perception and 30% thought that "some of the unidentified flying objects that have been reported are really space vehicles from other civilizations."
In 2017 the Chapman University Survey of American Fears asked about seven paranormal beliefs and found that "the most common belief is that ancient advanced civilizations such as Atlantis once existed (55 percent). Next was that places can be haunted by spirits (52 percent), aliens have visited Earth in our ancient past (35 percent), aliens have come to Earth in modern times (26 percent), some people can move objects with their minds (25 percent), fortune tellers and psychics can survey the future (19 percent), and Bigfoot is a real creature. Only one-fourth of respondents didn't hold at least one of these beliefs."
In 1922, Scientific American offered two US$2,500 offers: (1) for the first authentic spirit photograph made under test conditions, and (2) for the first psychic to produce a "visible psychic manifestation". Harry Houdini was a member of the investigating committee. The first medium to be tested was George Valiantine, who claimed that in his presence spirits would speak through a trumpet that floated around a darkened room. For the test, Valiantine was placed in a room, the lights were extinguished, but unbeknownst to him his chair had been rigged to light a signal in an adjoining room if he ever left his seat. Because the light signals were tripped during his performance, Valiantine did not collect the award. The last to be examined by Scientific American was Mina Crandon in 1924.
The James Randi Educational Foundation offers a prize of a million dollars to a person who can prove that they have supernatural or paranormal abilities under appropriate test conditions. Several other skeptic groups also offer a monied prize for proof of the paranormal, including the largest group of paranormal investigators, the Independent Investigations Group, which has chapters in Hollywood; Atlanta; Denver; Washington, D.C.; Alberta, B.C.; and San Francisco. The IIG offers a $100,000 prize and a $5,000 finders fee if a claimant can prove a paranormal claim under 2 scientifically controlled tests. Founded in 2000 no claimant has passed the first (and lower odds) of the test.
- Australian Sheep-Goat Scale
- Folie a deux
- Ghost Hunting
- Ghost Stations
- New Age
- Astral projection
- Extrasensory perception
- Out-of-body experience
- Paranormal fiction
- Category:Paranormal investigators
- List of paranormal magazines
- List of reported UFO sightings
- Paranormal by locations
- List of reportedly haunted locations in the World
- In Bangladesh
- In Canada
- In China
- In Colombia
- In France
- In India
- In Mexico
- In the Philippines
- In Romania
- In the United Kingdom
- In the United States
- Also includes the effect of placebo through "power of the human mind to heal the body".
- Some may have taken this metaphorically.
- "Belief in the Paranormal or Pseudoscience". Nsf.gov. Archived from the original on 4 February 2012. Retrieved 7 March 2012.
- "Paranormal". The Free Dictionary. Retrieved 3 February 2008.
- "Paranormal". Dictionary.com. Ask.com.
- "Paranormal". Merriam-Webster Dictionary. Merriam-Webster.
- Stenger, Victor. (1990). Physics and Psychics: The Search for a World Beyond the Senses. Prometheus Books. pp. 33–52. ISBN 978-0-87975-575-1
- Gordon, Stuart. (1993). The Paranormal: An Illustrated Encyclopedia. Trafalgar Square. ISBN 978-0747236030
- "Paranormal". In odisha
- "Paranormal". In Dictionary.com.
- Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 20. ISBN 1-57392-979-4
- Parapsychological Association. "Paranormal". Glossary of key words frequently used in parapsychology. Retrieved 13 December 2006.
- "Ghost". The Free Dictionary. Retrieved 13 December 2006.
- Melton, J. Gordon. "Animism". Encyclopedia of Occultism & Parapsychology'. Gale Research. ISBN 0-8103-5487-X.
- Hamel & Frazer, George (Editor) (1993). The Golden Bough. London: Wordsworth.CS1 maint: extra text: authors list (link)
- "NASA Scientists To Discuss Search For Extraterrestrial Life". Spacedaily.com. Retrieved 15 June 2014.
- Freudenrich, Craig (8 May 2001). "HowStuffWorks "How SETI Works"". Howstuffworks.com. Retrieved 15 June 2014.
- Brenda Denzler. The Lure of the Edge: Scientific Passions, Religious Beliefs, and the Pursuit of UFOs. Univ of California Press; 7 November 2001. ISBN 978-0-520-22432-2. p. 67–.
- Susanna Hornig Priest. Encyclopedia of Science and Technology Communication. SAGE; 14 July 2010. ISBN 978-1-4129-5920-9. p. 918–.
- Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. pp. 119-120. ISBN 1-57392-979-4
- 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."
- 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."
- Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 122. ISBN 1-57392-979-4 "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."
- Harvey J. Irwin, Caroline A. Watt. (2007). An Introduction to Parapsychology, 5th ed. McFarland. p. 249
- Kurtz, Paul. (September 2006). Science and the Public: Summing Up Thirty Years of the Skeptical Inquirer. Skeptical Inquirer 30 (5): 13-19.
- Stenger, Victor J. (1990). Physics and Psychics: The Search for a World Beyond the Senses. Prometheus Books. p. 192. ISBN 978-0-87975-575-1 "Today, parapsychology is widely regarded as a pseudoscience.... Over a century it has been tainted by fraud, incompetence, and a general unwillingness to accept the verdict of conventional scientific method."
- 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."
- 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."
- Cordón, Luis A. (2005). Popular Psychology: An Encyclopedia. Greenwood Press. p. 182. ISBN 0-313-32457-3. "The essential problem is that a large portion of the scientific community, including most research psychologists, regards parapsychology as a pseudoscience, due largely to its failure to move beyond null results in the way science usually does. Ordinarily, when experimental evidence fails repeatedly to support a hypothesis, that hypothesis is abandoned. Within parapsychology, however, more than a century of experimentation has failed even to conclusively demonstrate the mere existence of paranormal phenomenon, yet parapsychologists continue to pursue that elusive goal."
- Oling-Smee, L (1 March 2007). "The lab that asked the wrong questions". Nature. 446 (7131): 10–1. Bibcode:2007Natur.446...10O. doi:10.1038/446010a. PMID 17330012.
- Logical Investigations Husserl, E. 1970 Humanities Press
- Problem of inference and proof in participant observation: Problem of inference and proof in participant-observation, Reprint edition. Becker, Howard S. 1993 Irvington Pub
- "Paranormal Groups". Ghostvillage.com. Retrieved 15 June 2014.
- Caso, Alvaro. "Three Skeptics' Debate Tools Examined". Skeptical Inquirer, Volume 26, No 1, pp 37–41, January–February 2002.
- Marks, D. F. (1988). The psychology of paranormal beliefs. Experientia 44: 332-337.
- Richard Wiseman (2011). "The Haunted Brain". www.csicop.org. Retrieved 7 January 2019.
- Schmaltz R. M; Lilienfeld, S. O. (2014). Hauntings, homeopathy, and the Hopkinsville Goblins: Using pseudoscience to teach scientific thinking. Frontiers in Psychology. 5: 336.
- Alcock, James. (1981). Parapsychology-Science Or Magic?: A Psychological Perspective. Pergamon Press. pp. 139–140. ISBN 978-0080257730 "It was through the diligent efforts of conjurer James ('The Amazing') Randi that Geller was finally, at least in most people's eyes, exposed. Randi demonstrated that he could by ordinary conjuring means duplicate Geller's feats. His perseverance in investigating and unveiling the circumstances of many of Geller's more spectacular performances (including the discovery of confederates who aided Geller when necessary) made it very difficult for anyone with any degree of critical thought to continue to accept Geller's claims."
- Hurley, Patrick J. (2010). A Concise Introduction to Logic. 11th Edition. Wadsworth Publishing. p. 626. ISBN 978-0840034168 "In fact Geller was just a clever trickster who duped his audiences. Geller's trickery was exposed in large measure by the magician James Randi. After watching videotapes of Geller's performances, Randi discovered how Geller performed his tricks, and in no time he was able to perform every one of them himself. Sometimes Geller would prepare a spoon or key beforehand by bending it back and forth several times to the point where it was nearly ready to break. Later, by merely stroking it gently, he could cause it to double over. On other occasions Geller, or his accomplices, would use sleight-of-hand maneuvers to substitute bent objects in the place of straight ones."
- "The Million Dollar Challenge". James Randi Education Foundation.
- Nicola Holt, Christine Simmonds-Moore, David Luke, Christopher French. (2012). Anomalistic Psychology (Palgrave Insights in Psychology). Palgrave Macmillan. ISBN 978-0230301504
- Wiseman, Richard; Watt, Caroline (2006). "Belief in psychic ability and the misattribution hypothesis: A qualitative review" (PDF). British Journal of Psychology. 97 (3): 323–38. CiteSeerX 10.1.1.537.3311. doi:10.1348/000712605X72523. PMID 16848946.
- van Elk, Michiel (2003). "Paranormal believers are more prone to illusory agency detection than skeptics". Consciousness and Cognition. 22 (3): 1041–46. doi:10.1016/j.concog.2013.07.004. PMID 23933505.
- French, C. C., & Wilson, K. (2007). "Cognitive factors underlying paranormal beliefs and experiences". In S. Della Sala (ed.). Tall Tales About the Mind and Brain: Separating Fact From Fiction. Oxford: Oxford University Press. Chapter 1, pp. 3–22.
- Willard A., & Norenzayan, A. (2013). "Cognitive biases explain religious belief, paranormal belief, and belief in life's purpose". Cognition 129: 379-91.
- Rattet, S. L. & Bursik, K. (2001). "Investigating the Personality Correlates of Paranormal Belief and Precognitive". Experience. Personality and Individual Differences, 31, 433–444.
- Wiseman, Richard; Greening, Emma; Smith, Matthew (2003). "Belief in the paranormal and suggestion in the seance room" (PDF). British Journal of Psychology. 94 (3): 285–297. CiteSeerX 10.1.1.528.2693. doi:10.1348/000712603767876235. ISSN 2044-8295. PMID 14511544.
- Wolfradt, U. (1997). "Dissociative Experiences, Trait Anxiety and Paranormal Beliefs". Personality and Individual Differences, 23, 15–19.
- Harvey J. Irwin. (2009). The Psychology of Paranormal Belief: A Researcher's Handbook. University Of Hertfordshire Press. p. 89. ISBN 978-1902806938
- Bainbridge, W. S. (1978). "Chariots of the gullible". Skeptical Inquirer, 3, 33–48.
- Wuthnow, R. (1976). "Astrology and marginality". Journal for the Scientific Study of Religion, 15, 157–168.
- Otis, L. P., & Alcock, J. (1982). "Factors affecting extraordinary belief". Journal of Social Psychology, 118, 77–85.
- Smith, M. D., Foster, C. L., & Stovin, G. (1998). "Intelligence and paranormal belief: Examining the role of context". Journal of Parapsychology, 62, 65–77.
- Blum, S. H. & Blum, L. H. (1974). "Do's and Dont's: An Informal Study of some Prevailing Superstitions". Psychological Reports, 35, 567-571.
- Jahoda, G. (1970). "Supernatural Beliefs and Changing Cognitive Structures among Ghanaian University Students". Journal of Cross-Cultural Psychology, 1, 115–130.
- Killen, P., Wildman, R. W. & Wildman, R. W. II (1974). "Superstitiousness and Intelligence". Psychological Reports, 34, 1158.
- Tobacyk, J. J. (1984). "Paranormal belief and college grade point average". Psychological Reports, 54, 217–218.
- Messer, W. S., & Griggs, R. A. (1989). "Student belief and involvement in the paranormal and performance in introductory psychology". Teaching of Psychology, 16, 187–191.
- Gow, K., Lang, T. and Chant, D. (2004). "Fantasy proneness, paranormal beliefs and personality features in out-of-body experiences". Contemp. Hypnosis, 21: 107–125.
- Irwin, H. J. (1994). "Paranormal belief and proneness to dissociation". Psychological Reports, 75, 1344–1346.
- Williams, Emyr, Francis, Leslie J. and Robbins, Mandy. (2007). "Personality and paranormal belief: a study among adolescents". Pastoral Psychology, Vol. 56 (No. 1). pp. 9–14
- Tobayck, J. & Milford, G. (1983). "Belief in paranormal phenomena: assessment instrument development and implications for personality functioning". Journal of Personality and Social Psychology, 44, 1029–1037.
- Roig, M., Bridges, K. R., Renner, C. H. & Jackson, C. R. (1998). "Belief in the paranormal and its association with irrational thinking controlled for context effects". Personality and Individual Differences, 24 (2), 229–236.
- Wierzbicki, M. (1985). "Reasoning errors and belief in the paranormal". Journal of Social Psychology, 125, 489–494.
- Roe, C. A. and Morgan, C. L. (2002). "Narcissism and belief in the paranormal". Psychological Reports, 90, 405–411.
- Boer de R. & Bierman, D. J. (2006). "The roots of paranormal belief: Divergent associations or real paranormal experiences?" Proceedings of the PA 2006 Convention, 283–298.
- Lawrence, E., & Peters, E. (2004). "Reasoning in believers in the paranormal". Journal of Nervous & Mental Disease, 192, 727–733.
- French, C. C., Santomauro, J., Hamilton, V., Fox, R., & Thalbourne, M. (2008). "Psychological aspects of the alien contact experience". Cortex. 44, 1387–1395.
- Perkins SL, Allen R. (2006). Childhood physical abuse and differential development of paranormal belief systems. The Journal of Nervous and Mental Disease 194: 349-355.
- French, C. C., & Kerman, M. K. (1996). "Childhood trauma, fantasy proneness and belief in the paranormal". Paper presented to the 1996 London Conference of the British Psychological Society, Institute of Education, University of London, 17–18 December 1996.
- Lawrence. T., Edwards, C., Barraclough, N., Church S., & Hetherington, F. (1995). "Modelling childhood causes of paranormal belief and experience: Childhood trauma and childhood fantasy". Personality and Individual Differences, 19(2), 209–215.
- Ross, C. A. & Joshi, S. "Paranormal Experiences in the General Population". Journal of Nervous and Mental Disease. 180, 357–361.
- Blackmore, S. J., & Troscianko, T. (1985). "Belief in the paranormal: probability judgements, illusory control and the 'chance baseline shift'". British Journal of Psychology. 76, 459–468.
- Clarke, D. (1991). "Belief in the paranormal: a New Zealand survey". Journal of the Society for Psychical Research, 57, 412–425.
- Rice, T. W. (2003). "Believe it or not: religious and other paranormal beliefs in the United States". Journal for the Scientific Study of Religion, 42, 95–106.
- Tobacyk, J. J., Nagot, E., & Miller, M. (1988). "Paranormal beliefs and locus of control: A Multidimensional examination". Journal of Personality Assessment, 54, 241–246.
- Otis, L. P., & Kuo, E. C. Y. (1984). "Extraordinary beliefs among students in Singapore and Canada". Journal of Psychology, 116, 215–226.
- Christopher D. Bader, F. Carson Mencken and Joseph Baker. (2011). Paranormal America: Ghost Encounters, UFO Sightings, Bigfoot Hunts, and Other Curiosities in Religion and Culture. NYU Press. pp. 57-58. ISBN 978-0814791356
- Chang, Kenneth. "Do Paranormal Phenomena exist?". The New York Times. Retrieved 4 October 2013.
- Elk, Michiel van. (2013). Paranormal believers are more prone to illusory agency detection than skeptics. Consciousness and Cognition 22: 1041–1046.
- Shiah YJ, Wu YZ, Chen YH, Chiang SK. (2014). "Schizophrenia and the paranormal: More psi belief and superstition, and less déjà vu in medicated schizophrenic patients". Comprehensive Psychiatry 55: 688-92.
- Raz, A., Hines, T., Fossella, J., & Castro, D. (2008). Paranormal experience and the COMT dopaminergic gene. A preliminary attempt to associate phenotype with using an underlying brain theory. Cortex, 44: 1336-1341.
- Pizzagalli D, Lehmann D, Gianotti L, Koenig T, Tanaka H, Wackermann J, Brugger P. "Brain electric correlates of strong belief in paranormal phenomena: intracerebral EEG source and regional Omega complexity analyses". Psychiatry Res. 2000 Dec 22; 100(3):139-54
- Schulter, G. & Papousek, I. (2008). "Believing in paranormal phenomena: Relations to asymmetry of body and brain". Cortex, 44, 1326–1335.
- Phillips, Helen. "Paranormal beliefs linked to brain chemistry". New Scientist. New Scientist. Retrieved 4 October 2013.
- Barry Singer and Victor A. Benassi. "Occult Beliefs: Media distortions, social uncertainty, and deficiencies of human reasoning seem to be at the basis of occult beliefs". American Scientist, Vol. 69, No. 1 (January–February 1981), pp. 49-55.
- Kurtz, Paul. (2001). Skepticism and Humanism: The New Paradigm. Transaction Publisher. p. 63
- Hines, Terence. (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 38
- Massimo Pigliucci; Maarten Boudry (16 August 2013). Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. University of Chicago Press. p. 155. ISBN 978-0-226-05182-6.
- ABC Science Online. "News in Science - 'Spooky survey' gets big response - 17/11/2006". Abc.net.au. Retrieved 15 June 2014.
- "Smart People See Ghosts", Brad Steiger, Fate Magazine, April 2006, p. 52-56; the unusual thing found by Farha and Steward was that belief in the supernatural increased with education level, contrary to many other surveys. However, that aspect of their study is not being used here.
- W. Moore, David (16 June 2005). "Three in Four Americans Believe in Paranormal". Gallup. Retrieved 19 September 2013.
- USA Today, 12 January 1994
- ""Science and Technology: Public Attitudes and Understanding-Public Knowledge About S&T", Chapter 7 of Science and Engineering Indicators 2004, National Science Board, National Science Foundation". Nsf.gov. Archived from the original on 18 August 2015. Retrieved 7 March 2012.
- "Chapman Survey 2017: Advanced Ancient Civilizations, Spirits, Alien Visits Remain Top Paranormal Beliefs". Skeptical Inquirer. 42 (1): 5. 2018.
- "Randi $1,000,000 paranormal challenge". The Skeptic's Dictionary. Retrieved 3 February 2008.
- Larsen, Claus (September 2003). "Get Rich Quick or Save the World". Skeptic Report. Archived from the original on 23 March 2007. Retrieved 7 March 2007.
- Independent Investigations Group. "Investigations". Retrieved 11 April 2012.
- Bell, V. & Halligan, P. W. (2012). "The Neural Basis of Abnormal Personal Belief". In F. Kruger and J. Grafman (eds) The Neural Basis of Human Belief Systems. Hove: Psychology Press.
- Cohen, D. (1989). Encyclopedia of the Strange. Hippocrene Books. ISBN 978-0880294515
- Crawley, S. E. (2001). "Psychic or fantasy-prone?" The Skeptic, 14(1), 11–12.
- French, C. C. (1992) "Population stereotypes and belief in the paranormal: Is there a relationship?" Australian Psychologist, 27, 57-58.
- French, C. C. (1992) "Factors underlying belief in the paranormal: Do sheep and goats think differently?" The Psychologist", 5, 295–299.
- Hatton, K. (2001). "Developmental origins of magical beliefs". The Skeptic, 14(1), 18–19.
- Hines, T. (2003). Pseudoscience and the Paranormal. Prometheus Books.
- Holden, K. J., & French, C. C. (2002). "Alien abduction experiences: Clues from neuropsychology and neuropsychiatry". In Spence, S. A., & Halligan, P. W. (eds.) Pathologies of Body, Self and Space. Hove: Psychology Press. 163–178.
- Irwin, H. (2009). The Psychology of Paranormal Belief: A Researcher's Handbook. University Of Hertfordshire Press. ISBN 978-1902806938
- Jink, T. (2011). An Introduction to the Psychology of Paranormal Belief and Experience. Mcfarland. ISBN 978-0786465446
- Lange, R., Houran, J. (1998). "Delusions of the paranormal: A haunting question of perception". Journal of Nervous and Mental Disease, 186 (10), 637–645.
- Marks, D. F. (1988). "The psychology of paranormal beliefs". Experientia, 44, 332–337.
- Stein, G. (1996). The Encyclopedia of the Paranormal. Prometheus Books. ISBN 978-1573920216
- Thalbourne, M. A. & French, C. C. (1995) "Paranormal belief, manic-depressiveness, and magical ideation: A replication". Personality and Individual Differences, 18, 291–292.
- Wilson, K. & French, C. C. (2006). "The relationship between susceptibility to false memories, dissociativity, and paranormal belief and experience". Personality and Individual Differences, 41, 1493–1502.
- Wiseman, R. & Watt, C. (2006). "Belief in psychic ability and the misattribution hypothesis: A qualitative review". British Journal of Psychology. 97, 323–338.