Now, in the current issue of the Journal of Parapsychology, Eckhard Etzold reports a successful conceptual confirmation and extension of the original observation, not in data from a casino but from an online retro-PK experiment:
SOLAR-PERIODIC FULL MOON EFFECT IN THE FOURMILAB RETROPSYCHOKINESIS PROJECT EXPERIMENT DATA: AN EXPLORATORY STUDY
ABSTRACT: Radin and Rebman (1998) claimed evidence of psychokinesis effects in casino payout rates depending on lunar phases. They found the peak effect in the full-moon interval. This paper reports on an experimental data evaluation of 199,632 retroPK experiment trials, covering eight years. The hypothesis of a full moon effect is tested with the large database of the Fourmilab RetroPsychoKinesis Project. An earlier test of these findings by the author, published in 2000, supported the full moon hypothesis. In additional tests with new data, published in 2002, the observed effect changed its sign and disappeared. Some researchers, including the author, suggested in the past an anomalous experimenter effect and assumed the consequences of the model of pragmatic information to be the real cause of these effects. But a new evaluation of the data revealed a significant retroPK solar-periodic relationship which indicates that actually physical parameters are responsible for the change of the full-moon effect in the mentioned intervals. The hypothesis is suggested that the moon’s interaction with earth’s magnetosphere during the moon’s passage through the magnetotail in full-moon times might modulate retroPK performance.