The subjects were 32 college student volunteers all assessed to have normal or corrected normal visual abilities. Each subject reacted to each of five variously colored balls 100 times per day over a 2-day period. These balls randomly appeared at one of four locations in the subjects' visual field. Analysis indicated that the effect of color was nonsignificant. The location of stimuli was significant; faster reactions occurred at the locations closest to the subjects' point of fixation.
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