Varying Interstimulus Distance and Size of Stimulus in Beta Motion

Summary

An alternative method of varying interstimulus distance was investigated. Ss were 36 female undergraduates. Instead of changing the distance between two like-sized stimuli, stimulus size was altered with center-to-center distance held constant, thus producing variations in interstimulus distance. Upper limit measures were increased as stimulus size was increased. Several hypotheses were formulated with respect to this finding and its implications for the effects of interstimulus distance on attempts to determine range and locus of beta motion.