Abstract

Effect sizes achieved by adult operators in random event generator anomalies experiments showed correlations with the ordinal positions of the experimental series in both collective and individual databases. There were significant tendencies for Ss to produce better scores over their 1st series, to fall off in performance in their 2nd and 3rd series, and then to recover to intermediate levels during their 4th, 5th, and subsequent series. Such correlations appeared in local and remote experiments and were indicated over a sequence of experimental protocols; no similar effects were found in baseline or calibration data. The serial position patterns appear to be primarily psychological in origin and may subsume decline, primacy, recency, and terminal effects propounded in parapsychological and psychological literature. An appended article summarizes serial position effects associated with psychological/cognitive processes and parapsychology.