This study was designed to test the effect of practice on the expansion of peripheral vision. 24 college speed reading students were tested for a measure of peripheral vision with a Lafayette Color Perimeter. Half of the Ss practiced detection of a white stimulus object for a period of 6 wk. Ss serving as controls assisted by moving the carrier into the visual field of an experimental partner. Analysis of variance showed significant increase in visual fields for all Ss, experimental and control. Attention factors and equipment used in the speed reading classes appear to account for these results.
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