At the University of Colorado Medical Center a large meter registering nondominant hand electrodermal response (EDR) allowed videotaping from two different viewing angles of a fascinating card reading experiment.

The subject, Susie S., had already appeared on the Tonight Show with Johnny Carson and had apparent success with the experiment. Under the guidance of the renown parapsychologist and psychoanalyst Jules Eisenbud, the author and six scientific witnesses observed the experiment during which the subject, Susie S. sat on the other side of a large table. A deck of cards was shuffled by one of the scientific observers and spread out face down on the table well out of reach of Susie. At this point another of the observers silently chose a target card, e.g., 3 of spades and wrote his choice on a piece of paper. The author would then pull one card at a time out of the mass of shuffled cards without looking at the face of the card. If the EDR meter registered a response the card was placed (still face down) in a "hot" pile. If there was no response it was put in the "cold" pile.

After all the cards had been gone through, the hot pile would then be spread out and the process repeated. In these repetitions some of the formerly "hot" cards would not register, but others would, resulting in a smaller pile of hot cards. This process was repeated until the EDR had to "choose" between the last two cards. During all this time Susie was asked to make a verbal guess if she felt strongly about. In the 15 trials she never once gave a verbal response because as she said later, she did not feel, in the presence of so many scientists, thatshe could predict accurately. However, her EDR correctly predicted 12 out of 15 trial outcomes. In one trial, considered a miss, the EDR could not differentiate between the final 2 cards. It registered a hot response of equal value with each card. The 2 cards turned out to be the 3 of spades and the 3 of clubs (both black and both 3s).