APA Dictionary of Psychology

in parapsychology experiments using Zener cards, a technique in which the participant indicates their guess concerning the symbol on the top card in an inverted deck by pointing to one of five positions corresponding to each of the possible symbols. The card is then placed in this position, still face down, for later checking. Because the person handling the cards never sees them face up, the technique is used in tests of clairvoyance as opposed to telepathy. Also called screened touch matching. See also basic technique.