Abstract

This is a comprehensive report on an experiment conducted with a high -scoring ESP subject on the Duke campus in 1933-34 and on statistical analyses subsequently applied to the data. The work involved testing the subject\'s ability to identify concealed cards (clairvoyance) at distances of 100 and 250 yards. In each of four subseries the results were statistically significant, and the total experiment gave a positive deviation of hits from chance expectation with a probability value of 10 -super(-22). The test procedure and conditions provided special safeguards against any undetected errors, and subsequent critical scrutiny has revealed no flaw in the series as evidence for the occurrence of ESP.