Extra-Sensory Perception


University Courses






Psychic Detectives

1. Definitions


There are various definitions of Parapsychology. It is commonly defined as:

“…the study of apparent new means of communication, or exchange of influence, between organisms & environment.”

Koestler Parapsychology Unit.

Parapsychologists frequently use a variety of terms to refer to the different types of communication that occur. Terms like clairvoyance, precognition, telepathy, mediumship etc. All of these are regarded as examples of psi phenomena (in the past referred to as psychic phenomena). Parapsychology can also be defined as “the scientific study of ESP and PK” which differentiates between communication (i.e. ESP) and influence (PK).

Extra-Sensory Perception (ESP)

ESP covers telepathy, precognition and clairvoyance.
Telepathy is mind-to-mind communication. Precognition is essentially predicting the future. Clairvoyance is the ability to perceive objects or people not visible through any of the five ordinary senses.

Psycho Kinesis (PK)

PK covers any phenomena that shows alleged action of the mind on inanimate objects. It includes both macro PK (visible effects such as spoon-bending) and micro PK (effects only visible using monitoring equipment, e.g. altering the decay of radioactive material). Additionally PK covers any ‘group’ PK effects such as ouija or table-tipping where, rather than communication with spirit, one theory postulates that it is the collective action of a group of minds on the glass or planchette. Some parapsychologists refer to poltergeist activity as RSPK (Recurrent Spontaneous Psycho Kinesis), where the phenomena is centered around, and is the result of, a specific person in a location.

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