Paranormal

The paranormal comprises phenomena claimed to exceed or lie outside established scientific explanations, including alleged telepathy, ghosts, and psychokinesis.

Extrasensory perception: Alleged acquisition of information without relying on recognized sensory channels. Telepathy and clairvoyance are commonly presented as forms of this ability.
Ganzfeld experiment: A laboratory procedure using sensory homogenization to test alleged telepathic information transfer. It became a prominent experimental approach to testing extrasensory perception.
J. B. Rhine: An American psychologist who developed laboratory methods for studying extrasensory perception at Duke University. His card-guessing studies helped establish parapsychology as an experimental research program.
Skepticism: A habit of withholding belief until claims have adequate evidence. Skeptical inquiry demands stronger evidence than testimony or uncontrolled demonstrations.
Spiritualism: A religious movement centered on communication with the spirits of the dead, often through mediums. It made séances and mediumship major settings for claims about paranormal contact.
Psychokinesis: Alleged influence of physical objects or events by mental action alone. It covers paranormal claims about minds affecting matter directly.
Random number generator: A device or algorithm that produces sequences intended to be unpredictable. Psychokinesis studies have tested whether intention correlates with deviations in random output.
William James: An American philosopher and psychologist who investigated religious experience and psychical research. His work gave serious attention to reports that challenged conventional accounts of mind.
Scientific method: A systematic approach to investigating claims through observation, hypothesis testing, and revision. Its standards distinguish testable evidence from explanations insulated from disconfirmation.
Parapsychology: The study of alleged psychic phenomena such as telepathy, clairvoyance, and psychokinesis. This research field organizes many paranormal claims into experimental categories.

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