The word "psychic" is derived from the Greek word psychikos ("of the mind" or "mental"), and refers in part to the human mind or psyche (ex. "psychic turmoil"). The Greek word also means "soul". In Greek mythology, the maiden Psyche was the deification of the human soul. The word derivation of the Latin psȳchē is from the Greek psȳchḗ, literally "breath", derivative of psȳ́chein, to breathe or to blow (hence, to live).^[10]

French astronomer and spiritualist Camille Flammarion is credited as having first used the word psychic, while it was later introduced to the English language by Edward William Cox in the 1870s.^[11]

Elaborate systems of divination and fortune-telling date back to ancient times. Perhaps the most widely known system of early civilization fortune-telling was astrology, where practitioners believed the relative positions of celestial bodies could lend insight into people's lives and even predict their future circumstances.^[12] Some fortune-tellers were said to be able to make predictions without the use of these elaborate systems (or in conjunction with them), through some sort of direct apprehension or vision of the future.^{[citation needed]} These people were known as seers or prophets, and in later times as clairvoyants (French word meaning "clear sight" or "clear seeing") and psychics.

Seers formed a functionary role in early civilization, often serving as advisors, priests, and judges.^[11] A number of examples are included in biblical accounts. The book of 1 Samuel (Chapter 9) illustrates one such functionary task when Samuel is asked to find the donkeys of the future king Saul.^[13] The role of prophet appeared perennially in ancient cultures. In Egypt, the priests of the sun deity Ra at Memphis acted as seers. In ancient Assyria seers were referred to as nabu, meaning "to call" or "announce".^[11]

The Delphic Oracle is one of the earliest stories in classical antiquity of prophetic abilities. The Pythia, the priestess presiding over the Oracle of Apollo at Delphi, was believed to be able to deliver prophecies inspired by Apollo during rituals beginning in the 8th century BC.^[14] It is often said that the Pythia delivered oracles in a frenzied state induced by vapors rising from the ground, and that she spoke gibberish, believed to be the voice of Apollo, which priests reshaped into the enigmatic prophecies preserved in Greek literature. Other scholars believe records from the time indicate that the Pythia spoke intelligibly, and gave prophecies in her own voice.^[15] The Pythia was a position served by a succession of women probably selected from amongst a guild of priestesses of the temple. The last recorded response was given in 393 AD, when the emperor Theodosius I ordered pagan temples to cease operation. Recent geological investigations raise the possibility that ethylene gas caused the Pythia's state of inspiration.^[16]

One of the most enduring historical references to what some consider to be psychic ability is the prophecies of Michel de Nostredame (1503–1566), often Latinized to Nostradamus, published during the French Renaissance period. Nostradamus was a French apothecary and seer who wrote collections of prophecies that have since become famous worldwide and have rarely been out of print since his death. He is best known for his book Les Prophéties, the first edition of which appeared in 1555. Taken together, his written works are known to have contained at least 6,338 quatrains or prophecies,^[17] as well as at least eleven annual calendars. Most of the quatrains deal with disasters, such as plagues, earthquakes, wars, floods, invasions, murders, droughts, and battles – all undated.

Nostradamus is a controversial figure. His many enthusiasts, as well as the popular press, credit him with predicting many major world events. Interest in his work is still considerable, especially in the media and in popular culture. By contrast, most academic scholars maintain that the associations made between world events and Nostradamus' quatrains are largely the result of misinterpretations or mistranslations (sometimes deliberate) or else are so tenuous as to render them useless as evidence of any genuine predictive power.^[18]

Englishwoman Mother Shipton demonstrated psychic abilities from her youth and foresaw historical events in the 16th century.^[19] In addition to the belief that some historical figures were endowed with a predisposition to psychic experiences, some psychic abilities were thought to be available to everyone on occasion. For example, the belief in prophetic dreams was common and persistent in many ancient cultures.^[20]

In the mid-nineteenth century, Modern Spiritualism became prominent in the United States and the United Kingdom. The movement's distinguishing feature was the belief that the spirits of the dead could be contacted by mediums to lend insight to the living.^{[21][page needed]} The movement was fueled in part by anecdotes of psychic powers. One such person believed to have extraordinary abilities was Daniel Dunglas Home, who gained fame during the Victorian period for his reported ability to levitate to various heights and speak to the dead.^[22]

As the Spiritualist movement grew, other comparable groups arose, including the Theosophical Society, which was co-founded in 1875 by Helena Blavatsky (1831–1891). Theosophy coupled spiritualist elements with Eastern mysticism and was influential in the early 20th century, later influencing the New Age movement during the 1970s. Blavatsky herself claimed numerous psychic powers.^[23]

By the late twentieth century, psychics were commonly associated with New Age culture.^[24] Psychic readings and advertising for psychics were common from the 1960s on, as readings were offered for a fee and given in settings such as over the phone, in a home, or at psychic fairs.^[25]

In a 1990 survey of members of the National Academy of Sciences, only 2% of the respondents thought that extrasensory perception had been scientifically demonstrated, with another 2% thinking that the phenomena happened sometimes. Asked about research in the field, 22% thought that it should be discouraged, 63% that it should be allowed but not encouraged, and 10% that it should be encouraged; neuroscientists were the most hostile to parapsychology of all the specialties.^[26][27]

A survey of the beliefs of the general United States population about paranormal topics was conducted by The Gallup Organization in 2005.^[28] The survey found that 41 percent of those polled believed in extrasensory perception and 26 percent believed in clairvoyance. 31 percent of those surveyed indicated that they believe in telepathy or psychic communication.

A poll of 439 college students conducted in 2006 by researchers Bryan Farha of Oklahoma City University and Gary Steward of University of Central Oklahoma, suggested that college seniors and graduate students were more likely to believe in psychic phenomena than college freshmen.^[29] Twenty-three percent of college freshmen expressed a belief in paranormal ideas. The percentage was greater among college seniors (31%) and graduate students (34%).^[30] The poll showed lower belief in psychic phenomena among science students than social science and education students.

Some people also believe that anyone can have psychic abilities which can be activated or enhanced through the study and practice of various disciplines and techniques such as meditation and divination, with a number of books and websites being dedicated to instruction in these methods.^[31] Another popular belief is that psychic ability is hereditary, with a psychic parent passing their abilities on to their children.^[32]

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Psychic abilities are common in science fiction, often under the term "psionics". They may be depicted as innate and heritable, as in Alfred Bester's The Demolished Man, A. E. van Vogt's Slan, Anne McCaffrey's Talents universe series or setting, and the television series Babylon 5. Another recurring trope is the conveyance of psychic power through psychoactive drugs, as in the Dune novels and indirectly in the Scanners films, as well as the ghosts in the StarCraft franchise. Somewhat differently, in Madeleine L'Engle's A Wind in the Door and Robert A. Heinlein's Stranger in a Strange Land, psychic abilities may be achieved by any human who learns the proper mental discipline, known as kything in the former work. Popular movies include The Initiation of Sarah. Psychic characters are also common in superhero comics, for instance Jean Grey, Professor X and Emma Frost as well as many others from the Marvel Comics' X-Men. More characters include the characters Raven Baxter and Booker Baxter from the Disney Channel Original Series That's So Raven and its spin-off Raven's Home. The Disney Channel Original Series American Dragon: Jake Long features recurring characters Cara and Sara, who are twin psychics claimed to be the descendants of the Oracle of Delphi, their visions also contrast their personalities (Cara is a Goth that sees only positive visions, while Sara is always in a good mood despite only seeing negative visions).

Parapsychological research has attempted to use random number generators to test for psychokinesis, mild sensory deprivation in the Ganzfeld experiment to test for extrasensory perception, and research trials conducted under contract by the U.S. government to investigate remote viewing. Critics such as Ed J. Gracely say that this evidence is not sufficient for acceptance, partly because the intrinsic probability of psychic phenomena is very small.^[4]

Critics such as Ray Hyman and the National Science Foundation suggest that parapsychology has methodological flaws that can explain the experimental results that parapsychologists attribute to paranormal explanations, and various critics have classed the field as pseudoscience. This has largely been due to a lack of replication of results by independent experimenters.^{[33][34][35][36][37]}

The evidence presented for psychic phenomena is not sufficiently verified for scientific acceptance, and there exist many non-paranormal alternative explanations for claimed instances of psychic events. Parapsychologists, who generally believe that there is some evidence for psychic ability, disagree with critics who believe that no psychic ability exists and that many of the instances of more popular psychic phenomena such as mediumism, can be attributed to non-paranormal techniques such as cold reading, hot reading, or even self-delusion.^[38][39] Cold reading techniques would include psychics using flattery, intentionally making descriptions, statements or predictions about a person vague and ambiguous, and surreptitiously moving on to another prediction when the psychic deems the audience to be non-responsive.^[40] Magicians such as James Randi, Ian Rowland and Derren Brown have demonstrated techniques and results similar to those of popular psychics, but they present physical and psychological explanations as opposed to paranormal ones.^{[citation needed]}

In January 2008 the results of a study using neuroimaging were published. To provide what are purported to be the most favorable experimental conditions, the study included appropriate emotional stimuli and had participants who are biologically or emotionally related, such as twins. The experiment was designed to produce positive results if telepathy, clairvoyance or precognition occurred, but despite this, no distinguishable neuronal responses were found between psychic stimuli and non-psychic stimuli, while variations in the same stimuli showed anticipated effects on patterns of brain activation. The researchers concluded that "These findings are the strongest evidence yet obtained against the existence of paranormal mental phenomena."^[41] James Alcock had cautioned the researchers against the wording of said statement.^[42]

A detailed study of Sylvia Browne predictions about missing persons and murder cases found that despite her repeated claims to be more than 85% correct, "Browne has not even been mostly correct in a single case".^[43] Concerning the television psychics, James Underdown states that testing psychics in a studio setting is difficult as there are too many areas to control: the psychic could be getting help from anyone on the set. The editor controls everything; they can make a psychic look superior or ridiculous depending on direction from the producer. In an Independent Investigations Group exposé of John Edward and James Van Praagh they discovered that what was actually said on the tape day, and what was broadcast to the public were "substantially different in the accuracy. They're getting rid of the wrong guesses... Once you pull back the curtain and see how it's done, it's not impressive at all."^[44]

Richard Saunders, Chief Investigator for the Australian Skeptics, and producer and presenter of The Skeptic Zone podcast sought to answer the question "Can self-proclaimed psychics predict unlikely future events with any greater accuracy than chance?"^[45] To answer that question he launched "The Great Australian Psychic Prediction Project". Over the course of 12 years, Saunders and then Saunders and his international team of skeptics - Michelle Bijkersma, Kelly Burke, Susan Gerbic, Adrienne Hill, Louis Hillman, Wendy Hughes, Paula Lauterbach, Dr. Angie Mattke, Rob Palmer, and Leonard Tramiel - searched through Australian published media for individuals making psychic or otherwise paranormal predictions.^[45]

The goal of the Great Australian Psychic Prediction Project was to collect and then vet the accuracy of every published psychic prediction in Australia since the year 2000. The team analyzed over 3800 predictions made by 207 psychics over the years 2000 to 2020. While a few of the psychic predictions were about events outside of Australia, the predictions primarily focused on celebrities, scandals, natural disasters, weather patterns, sports, and real estate trends.^[46]

The results of the analysis of the predictions found that psychics were correct 11% of the time, wrong 35% of the time, and that some predictions were too vague to characterize (19%) or the predicted outcome was so obvious it was to be expected (15%). Two percent of the predictions were unable to be categorized.^[46]

The main conclusions of the Great Australian Psychic Prediction Project were:^[45]
"Psychics are appallingly bad at predicting future events."
"Most predictions were too vague, expected, or simply wrong."
"Most of what happens is not predicted, and most of what is predicted does not happen."

The Project confirmed that even when considering the margin of error, it is difficult to come to any other conclusion except that people who claim to see into the future cannot do so with a rate of success better than that of educated guesswork, chance, or luck.^[46]

In an article reported by Pat Foran in CTV News-Toronto, an Ontario woman, known as Marie Jean, depressed after having to sell her home, began seeing a psychic who went by the name of Maha Dev. Marie Jean reported that Dev claimed she was surrounded by "evil spirits" and that "(her) life could be in danger and (her) sons could lose their lives." The initial payment requested was $10,000 to remove the spirits, but in subsequent visits Dev indicated that the spirits were "too strong" and more money was needed. In total, the woman paid $46,000 before deciding she had been "duped." After Marie Jean reported the incident to CTV News, CTV News contacted the psychic. While Dev did not admit to knowing the woman, the money was refunded in full the next day.^[47]

Falling for a psychic scam can result in a loss of one's entire life savings. In an example given in an article by Rob Palmer^[48] a woman gave a psychic $41,642 over a period of 10 weeks. The woman had contacted Palmer for help, who put her in contact with Bob Nygaard, a private investigator who specializes in psychic fraud cases. Palmer had previously written articles about Nygaard and the work he was doing.^[49][50]

It is apparently difficult to get cases of psychic fraud prosecuted as a crime. Palmer states "when someone reports to law enforcement that they are a victim of this type of fraud, they are often turned away and told it is a civil matter." Palmer goes on to discuss Thomas John and other famous "psychics" who were proven to be frauds.^[48] Investigator Ben Radford states that "scammers use various psychological principles to ensnare their prey". Their state of mind, belief in psychic abilities, unhappiness with something happening in their lives and looking for answers. The psychic will instruct the client not to tell their friends or family as they know they may be warned away from the psychic.

With curse removal, the psychic may say that the magic will not work or get worse if they do tell anyone about their involvement with the psychic. The con games from psychics, according to Radford, can "play out over the course of weeks, months, or even years." The psychic is playing the long game and looking to extract as much money as possible. Radford claims that when a victim realizes they have been scammed, often they are too embarrassed to come forward.^[51]

Skeptical activist Susan Gerbic has summarized a number of techniques, which she says are used by psychics to create their effects.^[52]