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Medical Definition of Constancy phenomenon
1. In perception, the tendency for brightness, colour, size, or shape to remain relatively perceptually constant despite real changes in colour, size, shape or other conditions of observation. (05 Mar 2000)
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1. In perception, the tendency for brightness, colour, size, or shape to remain relatively perceptually constant despite real changes in colour, size, shape or other conditions of observation. (05 Mar 2000)