Also known as “ESP cards,” this is a deck of 25 card using a repeating set of five simple geometric shapes (circle, square, wavy lines) used to test for ESP. The cards were designed in the 1930s by Karl Zener, a perceptual psychologist, for use by famed parapsychologist J.B. Rhine.
Readers, please enjoy this guest blog post by Matthew Ash McKernan, author of the new Wyrdcraft.
The weird, wild, and wonderful English psych-rock band Hawkwind said it well in their song, "We Took the Wrong Step Years Ago." What this "wrong...