Abstract
42 naive Ss between the ages of 18 and 22 and free from eye defects viewed 3 Necker cubes in random order in a study of the effect of angle of retinal vision on the rate of fluctuation. Ss fixated on a dot in the center of each cube which was situated left-face-forward-down for 2-min. trials and counted the number of fluctuations. It was found that fluctuations decreased as the angle of retinal vision increased. The decrease in fluctuation rate between the 3° and 8° angles, although evident, was not significant. However, the decrease in fluctuation rate between the 8° and 13° angles was significant at the .01 level. The study suggests this phenomenon may be more subject to external control than realized and could also be a function of personality. More likely, the phenomenon is an interaction of some nomothetic cortical process and the individual's idiographic peculiarities. Fragmentation and distortion were reported by Ss on all 3 of the cubes. These phenomena support a learning interpretation.
Published Version
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