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Parapsychology is the study of alleged psychic phenomena (extrasensory perception, telepathy, precognition, clairvoyance, psychokinesis (also called telekinesis), and psychometry) and other paranormal claims, for example, those related to near-death experiences, synchronicity, apparitional experiences, etc. Criticized as being a pseudoscience, the majority of mainstream scientists reject it. Parapsychology has also been criticized by mainstream critics for claims by many of its practitioners that their studies are plausible despite a lack of convincing evidence after more than a century of research for the existence of any psychic phenomena. Parapsychology research rarely appears in mainstream scientific journals; a few niche journals publish most papers about parapsychology. Terminology The term parapsychology was coined in 1889 by philosopher Max Dessoir as the German parapsychologie. It was adopted by J. B. Rhine in the 1930s as a replacement for the term psychical research to indicate a significant shift toward experimental methodology and academic discipline. The term originates from the Greek: παρά para meaning "alongside", and psychology. In parapsychology, psi is the unknown factor in extrasensory perception and psychokinesis experiences that is not explained by known physical or biological mechanisms. The term is derived from the Greek ψ psi, 23rd letter of the Greek alphabet and the initial letter of the Greek: ψυχή psyche, "mind, soul". The term was coined by biologist Bertold Wiesner, and first used by psychologist Robert Thouless in a 1942 article published in the British Journal of Psychology. The Parapsychological Association divides psi into two main categories: psi-gamma for extrasensory perception and psi-kappa for psychokinesis. In popular culture, "psi" has become more and more synonymous with extraordinary psychic, mental, and "psionic" abilities and powers. History Early psychical research In 1853, chemist Robert Hare conducted experiments with mediums and reported positive results. Other researchers such as Frank Podmore highlighted flaws in his experiments, such as lack of controls to prevent trickery. Agenor de Gasparin conducted early experiments into table-tipping. For five months in 1853, he declared the experiments a success, being the result of an "ectenic force". Critics noted that the conditions were insufficient to prevent trickery. For example, the sitters may have moved the table with their knees, and no experimenter was simultaneously watching above and below the table. The German astrophysicist Johann Karl Friedrich Zöllner tested the medium Henry Slade in 1877. According to Zöllner, some of the experiments were successful. However, flaws in the experiments were discovered, and critics have suggested that Slade was a fraud who performed trickery in the experiments. The Society for Psychical Research (SPR) was founded in London in 1882. Its formation was the first systematic effort to organize scientists and scholars to investigate paranormal phenomena. Early membership included philosophers, scholars, scientists, educators and politicians, such as Henry Sidgwick, Arthur Balfour, William Crookes, Rufus Osgood Mason and Nobel Laureate Charles Richet. Presidents of the Society included, in addition to Richet, Eleanor Sidgwick and William James, and subsequently Nobel Laureates Henri Bergson and Lord Rayleigh, and philosopher C. D. Broad. Areas of study included telepathy, hypnotism, Reichenbach's phenomena, apparitions, hauntings, and the physical aspects of Spiritualism such as table-tilting, materialization and apportation. In the 1880s, the Society investigated apparitional experiences and hallucinations in the sane. Among the first important works was the two-volume publication in 1886, Phantasms of the Living, which was largely criticized by scholars. In 1894, the Census of Hallucinations was published which sampled 17,000 people. Out of these, 1,684 persons admitted to having experienced a hallucination of an apparition. The SPR became the model for similar societies in other European countries and the United States during the late 19th century. Early clairvoyance experiments were reported in 1884 by Charles Richet. Playing cards were enclosed in envelopes, and a subject was put under hypnosis to identify them. The subject was reported to have succeeded in a series of 133 trials, but the results dropped to the chance level when performed before a group of scientists in Cambridge. J. M. Peirce and E. C. Pickering reported a similar experiment in which they tested 36 subjects over 23,384 trials, which did not obtain above-chance scores. In 1881, Eleanor Sidgwick revealed the fraudulent methods that spirit photographers such as Édouard Isidore Buguet, Frederic Hudson and William H. Mumler had utilized. During the late nineteenth century, many fraudulent mediums were exposed by SPR investigators. Largely due to the support of psychologist William James, the American Society for Psychical Research (ASPR) opened its doors in Boston in 1885, moving to New York City in 1905 under the leadership of James H. Hyslop. Notable cases investigated by Walter Franklin Prince of the ASPR in the early 20th century included Pierre L. O. A. Keeler, the Great Amherst Mystery and Patience Worth. 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 and funded by Thomas Welton Stanford, brother of the university's founder. After conducting approximately 10,000 experiments, Coover concluded that "statistical treatments of the data fail to reveal any cause beyond chance." 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 were developed and adopted by interested researchers worldwide. George Estabrooks conducted an ESP experiment using cards in 1927. Harvard students were used as the subjects. Estabrooks acted as the sender, with the guesser in an adjoining room. Estabrooks conducted a total of 2,300 trials. When Estabrooks sent the subjects to a distant room with insulation, the scores dropped to chance level. Attempts to repeat the experiment also failed. The publication of J. B.... Discover the Paul Levy Larry Dossey popular books. Find the top 100 most popular Paul Levy Larry Dossey books.