An experiment addressing anomalous human/machine interactions utilizing a feedback display of two competing pictures, the relative dominance of which is controlled by a microelectronic random generator, has yielded a number of equivocal results. On the one hand, an ingoing hypothesis that such a visually engaging mode of feedback might facilitate larger anomalous effects has not been supported by the composite results of 49 operators performing some 390,000 experimental trials. Likewise, a smaller ad hoc study of the relative efficacy of a subset of target pictures having religious or spiritual themes, although yielding effect sizes comparable with earlier random event generator (REG) data, has insufficient statistical power to resolve the question. Also, an attempt to assess the relative importance of the pictorial feedback, vis-à-vis the output of the REG, per se, in facilitating operator performance has not been definitive. Yet, certain secondary anomalies in these databases, such as gender disparities, individual operator performances, and serial position effects, show several characteristics akin to those previously found in other human/machine experiments in this laboratory. Whether these indicators can be used to develop more effective experiments of this class or to achieve a more fundamental understanding of the basic phenomena is the focus of ongoing research.
