56 adult Ss participated in an experiment to test the hypothesis that the Müller-Lyer illusion decrement is related to adaptation effects involved in the perception of angled lines. A Pearson significant (p < .01) correlation of .89 between the time it took to perceive an increment of the angle in angled lines and the time it took to perceive a decrement in the Müller-Lyer illusion was interpreted as supporting a greater emphasis on the use of adaptation effects as explanatory concepts for the Müller-Lyer figure.
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References
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GibsonJ. J.Adaptation, after-effect, and contrast in the perception of curved lines. Journal of Experimental Psychology, 1933, 16, 1–31.
