perceptual constancy

perceptual constancy

noun
(psychology) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation [syn: constancy
WordNet® 3.0, © 2006 by Princeton University.
Cite This Source
Encyclopedia Britannica
Encyclopedia

perceptual constancy

the tendency of animals and humans to see familiar objects as having standard shape, size, colour, or location regardless of changes in the angle of perspective, distance, or lighting. The impression tends to conform to the object as it is or is assumed to be, rather than to the actual stimulus. Perceptual constancy is responsible for the ability to identify objects under various conditions, which seem to be "taken into account" during a process of mental reconstitution of the known image. For example, snow appears white in the low illumination of moonlight, as well as in sunlight 800,000 times as bright. Perceptual constancy is reduced by limited experience with the object and by decreasing the number of environmental cues that aid in identification of the object.

Learn more about perceptual constancy with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature