Abstract
Boring asserted that Emmert's law of the apparent size of after-images held only under conditions of size constancy. In Phase I of the present experiment 28 male Ss made paired-comparisons judgments of the afterimage size and of the distance of the projection field at 7 distances ranging from 18 to 126 in. In Phase II, 14 male Ss made similar size and distance estimates using direct-images which subtended the same retinal angle as that subtended by the after-image inducing stimulus. Although size constancy obtained, the paired-comparisons scale for apparent afterimage size showed Emmert's law to fail as distance increased beyond 90 in.
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