Abstract

Two subjects were tested for ability to influence mentally the stopping point of rolling dice. On each trial ten wooden cubes were released electrically to roll down an incline onto an enclosed horizontal table. The table was divided into two equal areas, the A side and the B side. Over a series of trials in which each area was designated as the target the same number of times, a significant decline in success was observed. When this decline trend was made known to the subjects it disappeared. This suggests an inhibiting influence of conscious knowledge upon the effect.