ESP is an abbreviation for extrasensory perception, which is the ability to perceive information or events without the use of the recognized sensory channels. ESP includes four areas of phenomena:

- Telepathy: The ability to read the minds of others.

- Clairvoyance: The ability to see events that are occurring at a distance or to know things that are not apparent to normal sight.

- Precognition: The ability to know the future.

- Retrocognition: The ability to know past events without relying on memory or historical records.

Despite numerous attempts, ESP has never been scientifically proven to exist.