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Related Concept Videos

Perceptual Constancy01:12

Perceptual Constancy

Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
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Appearance is a multidimensional aspect of self-presentation that encompasses observable attributes such as clothing, grooming, speech, and nonverbal behavior. These elements are often strategically managed to align with socially constructed expectations in different settings. For instance, individuals tailor their appearance during job interviews, social gatherings, or athletic events to meet the perceived norms of those environments.Contextual Adaptation and Social SignalsThe research...
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Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in different ways based on the...
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Related Experiment Video

Updated: May 13, 2026

Investigating the Effect of Visual Imagery and Learning Shape-Audio Regularities on Bouba and Kiki
07:31

Investigating the Effect of Visual Imagery and Learning Shape-Audio Regularities on Bouba and Kiki

Published on: September 13, 2019

Shape aftereffects reflect shape constancy operations: appearance matters.

Katherine R Storrs1, Derek H Arnold

  • 1School of Psychology, The University of Queensland, St. Lucia,Queensland 4072, Australia. k.storrs@uq.edu.au

Journal of Experimental Psychology. Human Perception and Performance
|March 27, 2013
PubMed
Summary
This summary is machine-generated.

Shape aftereffects are not solely based on retinal image dimensions. Our study shows they involve perceived shape and higher-level neural processing, challenging previous assumptions.

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Published on: September 13, 2019

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Area of Science:

  • Visual perception
  • Neuroscience
  • Cognitive psychology

Background:

  • Shape aftereffects are a well-documented visual illusion where prolonged viewing of a shape alters the perception of subsequent shapes.
  • Current theories propose shape aftereffects are determined by the dimensions of retinal images.
  • This view is challenged by the phenomenon of shape constancy, where perceived shape remains stable despite changes in retinal images due to viewing angle.

Purpose of the Study:

  • To investigate whether shape aftereffects are influenced by perceived shape, particularly in the context of shape constancy.
  • To determine if shape aftereffects involve higher-level neural processing than previously assumed.

Main Methods:

  • Adaptation to shapes viewed from different angles, followed by frontoparallel testing.
  • Comparison of shape aftereffect performance with and without stereo surface slant cues.

Main Results:

  • Shape aftereffects were demonstrated to be influenced by viewing angle, indicating they are not solely determined by retinal image dimensions.
  • The magnitude of shape aftereffects was shown to be a weighted function of both retinal image shape and perceived surface slant.
  • This weighting aligns with mechanisms involved in shape constancy.

Conclusions:

  • Shape aftereffects are influenced by perceived shape, as mediated by shape constancy mechanisms.
  • These findings suggest that shape aftereffects involve higher-level neural substrates than previously believed, extending beyond simple retinal processing.