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Weintraub, Daniel J.; Cooper, Lynn A. – Developmental Psychology, 1972
Testing Pollack's hypothesis that decreases in effective contour contrast (resulting from a decrease in receptor sensitivity with age or from a change in actual stimulus contrast) lead to decreases in illusion magnitude. Conclusions are questioned by Sjostrom and Pollack (PS 501 740). (Author/MB)
Descriptors: Age Differences, Cognitive Processes, Contrast, Data Analysis