Abstract

The author carried out this ESP experiment in the mid-1920s in the Harvard Psychological Laboratories while he was a graduate student in the Psychology Department. He reported it at the time as Bulletin V of the Boston Society for Psychic Research. The original report has long been out of print and it is reprinted here in full with the author\'s permission. A brief editorial introduction places this experiment in perspective in the light of developments in parapsychology since it was first published.