Manual Ganzfeld: The use of the word “manual” refers to the fact that the target selection is carried out by manual access to computer or random number tables as well as the fact that all the important events in the experiment are recorded by hand. Consequently, the technique has limited safeguards against fraud or data selection compared with the Autoganzfeld.
References
- Parapsychology by Michael A. Thalbourne, Republished by Puente Publications, Charlottesville, VA, USA, 2003