Precognition (from the Latin præ-, "before" and cognitio, "acquiring knowledge"), also called prescience, future vision, future sight is an alleged psychic ability to see events in the future.
As with other forms of extrasensory perception, there is no reliable scientific evidence that precognition is a real ability possessed by anyone and it is widely considered to be pseudoscience. Specifically, precognition appears to violate the principle that an effect cannot occur before its cause.
Despite the lack of scientific evidence, many people believe it is a real phenomenon. There are many reports of precognition and it remains a topic of research and discussion within the parapsychology community.
There is no accepted scientific evidence that precognition exists and it is widely considered to be pseudoscience.
Despite this, many people believe in precognition. Precognition of earthquakes has been claimed.
Some surveys have been carried out on psychological reasons for belief in precognition. A 1978 Gallup poll found that 37% of Americans surveyed believed in precognition. According to psychologists Tobacyk and Milford, belief was greater in college women than in men, and a 2007 Gallup poll found that women were more prone to superstitious beliefs in general. A 2013 study discovered that greater belief in precognition was held by those who feel low in control, and the belief can act as a psychological coping mechanism.
Scientific investigation of parapsychology is complicated by the definition which implies that the phenomena go against established principles of science.
In the early 20th century J. W. Dunne, a British aeronautics engineer, experienced several dreams which he regarded as precognitive. He developed techniques to record and analyse them, identifying any correspondences between his future experiences and his recorded dreams. He reported his findings in his 1927 book An Experiment with Time. In it he alleges that 10% of his dreams appeared to represent some future experience. He also persuaded some friends to try the experiment on themselves, with mixed results. Dunne concluded that precognitive dreams are common and that many people unknowingly have them. The book went on to develop an explanatory theory of time and consciousness which he called Serialism. In 1932 he helped the Society for Psychical Research to conduct a more formal experiment, but he and the Society's lead researcher failed to agree on the significance of the results. Dunne's work was nevertheless widely read and "undoubtedly helped to form something of the imaginative climate of those [interwar] years". The Philosopher C. D. Broad remarked that, "The only theory known to me which seems worth consideration is that proposed by Mr. Dunne in his Experiment with Time."