Abstract
This study tests the generality of illusion decrement using four illusion figures involving intersecting lines: the Zoellner, Poggendorff, Wundt-Hering, and Mueller-Lyer figures. Five minutes of inspection with testing at 1-min intervals led to significant decrement in all figures. The rate of decrement was the same for all figures. These data are consistent with a judgmental theory of geometric illusions.
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We would like to thank Myra Agdern for her assistance in the collection of these data.
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Coren, S., Girgus, J.S. Illusion decrement in intersecting line figures. Psychon Sci 26, 108–110 (1972). https://doi.org/10.3758/BF03335451
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DOI: https://doi.org/10.3758/BF03335451