Abstract

In tests for a psychokinetic (PK) effect upon the placement of moving cubes, groups of objects with different degrees of surface roughness were released together. The experimenter, acting as his own subject, "willed" them to come to rest in the target half of the table. In one series the use of smooth and medium-rough cubes yielded chance results; in another, a statistically significant difference was found between smooth and very rough cubes. The results are evaluated in terms of the equivalent physical energy required to produce the effect and the psychological factors involved.