Baldwin illusion

'Baldwin illusion' can also refer to...


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A visual illusion in which a line spanning the distance between two large squares appears shorter than a line of the same length spanning the distance between two smaller squares (see illustration). It is a close relative of the Zanforlin illusion. [Named after the US psychologist James Mark Baldwin (1861–1934) who first drew attention to it]

Baldwin illusion. The horizontal lines between the squares are equal in length.

Subjects: Psychology.

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