Perceptual psychologist Karl Zener — designed the cards in the early s for experiments conducted with his colleague, parapsychologist J. Rhine — Hubert Pearce with Joseph Banks Rhine. The Zener cards are a deck of twenty five cards, five of each symbol. The five symbols are: a hollow circle, a plus sign, three vertical wavy lines, a hollow square, and a hollow five-pointed star.
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Rhine in his studies of ESP and have now become the standard for such extra sensorial tests. There are some variations of the Zener cards test, some are using a closed deck of cards 5 groups of each 5 cards or an open deck each cards are randomly selected from a deck shuffled at each turns.
The following test is an open deck, since a card is randomly generated from a shuffled deck every time. The card is also chosen before you have to guess. There are some feedback messages at the bottom while you do the test, you can decide to ignore them or read them during the test.
Some people may perform better if they are not distracted by it. A real test requires at least 25 picks to be statistically significant and a score of 10 correct guesses or more out of 25 is required to prove some degree of psychic abilities.
Scores over 10 would therefore be significant. For a thorough evaluation, one should take the test many times 10 or more for truly conclusive results. After pressing the button, click on the card that you think is represented by the unknown card on top. Repeat for 25 turns, when it is over, a message will pop to alert you. You can then look at your statistics at the bottom for your session.
It will inform you of your score, and will analyse if that score represent psychic abilities. If you decide to try a few more times, press the START button again, and the average result for all your sessions will be recorded and a log of your results will be generated.
What card is it?
Cartas zener test