Extra-Sensory Perception

Extra-Sensory Perception is the monograph in which J. B. Rhine sought to lift psychic claims out of the séance room and into the laboratory, coining the term "extrasensory perception" and presenting telepathy, clairvoyance, and precognition as testable hypotheses. Its central contention is that mind can acquire information through channels unaccounted for by the recognized senses, and that this can be demonstrated statistically.

Working at Duke University, Rhine relied on large numbers of forced-choice card-guessing trials using Zener cards, with results assessed against chance expectation; companion work with dice extended the inquiry to psychokinesis, the supposed direct influence of mind on matter. For a time the statistical apparatus gave parapsychology the appearance of a rigorous experimental science.

The book is foundational to experimental parapsychology and to later "mind over matter" claims. Its standing is strongly contested: critics identified methodological weaknesses such as inadequate randomization, sensory leakage, and selective reporting, and the early results did not reliably replicate. It remains essential context for both the aspiration and the persistent empirical difficulties of the field.