Unveiling the Zener Card: A Comprehensive Guide to ESP Testing
Unveiling the Zener Card: A Comprehensive Guide to ESP Testing The Zener card, a seemingly simple deck of five distinct shapes, has been a cornerstone in the world of parapsychology for decades. Designed by perceptual psychologist Karl Zener in the 1930s, these cards were intended to test for extrasensory perception (ESP), often referred to as … Read more