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. (November 15, 2018). https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/blind-matching
"Blind-Matching." Encyclopedia of Occultism and Parapsychology. . Retrieved November 15, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/blind-matching