Abstract

The progress of experimental parapsychology since 1927, when research in this field was started at Duke University, is reviewed. Experiments, particularly in America and England, yielded results which indicated that extrasensory perception (ESP) and psychokinesis (PK) occurred. The findings have also included facts bearing upon the nature of the psychological processes involved, such as the decline effect, displacement, effects of subject\'s attitudes, and other personality correlates. Some of the experiments were specifically designed to meet the criticisms leveled against earlier work. The evidence challenges many old psychological conceptions.