Extra Sensory Perception - ESP

Originally, tests for ESP were conducted using a standard deck of playing cards. However, there are many variables involved with this methodology. When this methodology is used, a participant is only credited with a correct prediction for guessing both the number and suit of the card. That means that the chance of correctly guessing a card becomes a lot lower; there then can be ambiguity involved with the statistical analysis.

Another problem with using playing cards is that many people will have a preference for a particular card, number or suit [Irwin 1999] and will constantly suggest that as their prediction for the next card that will appear. This led to the development of a set of cards known as Zener cards, a system of designs  invented by Karl Zener.


There are just five different Zener cards: a hollow circle (one curve), a Greek Cross (two lines), three vertical wavy lines (or "waves"), a hollow square (four lines), and a hollow five-pointed star. There are 25 cards in a pack, five of each design.

The Zenar cards above were used to test extra-sensory abilities

[The Institute] [Free Offers] [Membership] [Member services] [Courses] [Parapsychology] [Para Investigation] [Psychic Institute] [Ghosts] [Haunted Houses] [Out of Body] [Past/Future Life] [E.V.P.] [Time Travel] [U.F.O.s] [Remote Viewing] [Dream Effects] [Divination skills] [Paranormal/Weird] [Paranormal History] [Paranormal Science] [ESP] [Psychokinesis]