Abstract

Explored the question of how an S known to be a high scorer on extrasensory tasks would perform under circumstances in which the operations required of psi were made to seem increasingly "complex" as the experiment progressed. The basic method used was the "psychic shuffle," in which an S shuffles a deck of ESP cards to match a prearranged target order provided by the E. Modifications were made in the procedure from series to series by the introduction of a different E, by reversing the role of E and S, by moving the S and E into separate rooms, and by advancing to more complicated methods of randomizing the target order. 7 series, comprising 570 50-trial runs, were carried out with significant results (p < .01) in each. These results suggest that the apparent complexity introduced into the different series did not adversely affect the operation of psi.