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Ebbinghaus illusion

a size contrast illusion in which a concentric ring of large circles makes a medium-sized circle in the center of the ring look small, whereas the same circle in the center of a ring of smaller circles looks large. Also called Titchener circles; Titchener illusion. [introduced in the 1890s by Hermann Ebbinghaus but sometimes incorrectly attributed to Edward Bradford Titchener]

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Psychology term of the day

February 27th 2024

concrete attitude

concrete attitude

a cognitive style that is directed to specific objects and immediate stimuli. A person who exhibits a concrete attitude tends not to make abstract comparisons and will not usually respond to abstract qualities, concepts, or categories. Compare abstract attitude. [defined by Kurt Goldstein]