A set of cards used in ESP testing such as Zener cards. A subject tries to determine or “guesses” the symbol on card being viewed by a tester or predicts the next card and each card appears a fixed number of times. Statistical analysis of tests run using a closed deck uses different protocols than testing using an open deck. (See “Open Deck.”)
Readers, please enjoy this guest blog post by Alice Markham-Cantor, author of the new Once & Future Witch Hunt.
My 9x-great-grandmother, Martha Carrier, was hanged in the Salem witch trials. She wasn't a witch. She wasn't an herbalist or a...
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