A term used by parapsychologists in relation to tests for clairvoyance with ESP cards. The subject holds the pack of Zener cards face downward and sorts them into five piles, which are later compared to key cards already hidden in envelopes.
"Blind-Matching." Encyclopedia of Occultism and Parapsychology. . Encyclopedia.com. (January 24, 2019). https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/blind-matching
"Blind-Matching." Encyclopedia of Occultism and Parapsychology. . Retrieved January 24, 2019 from Encyclopedia.com: https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/blind-matching