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Related Experiment Videos

The apparent size of three-dimensional objects and their silhouettes: a solid-superiority effect.

J T Walker1, M J Walker

  • 1Department of Psychology, University of Missouri-St Louis 63121.

Perception
|January 1, 1988
PubMed
Summary

Solid objects appear larger than their outlines due to visual contour confusion. This solid-superiority effect might involve aspects of the Müller-Lyer illusion, impacting visual perception.

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Area of Science:

  • Visual Perception
  • Psychophysics
  • Cognitive Neuroscience

Background:

  • Objects are often perceived as larger than their 2D representations.
  • The solid-superiority effect describes this phenomenon where solid shapes appear larger than their outlines.

Purpose of the Study:

  • To investigate the underlying mechanisms of the solid-superiority effect.
  • To explore the role of visual contour assimilation and the Müller-Lyer illusion in this effect.

Main Methods:

  • Experimental manipulation of object and outline stimuli.
  • Psychophysical measurements of perceived size.
  • Analysis of visual contour processing and illusion contributions.

Main Results:

Related Experiment Videos

  • Solid objects were consistently perceived as larger than their corresponding outlines.
  • Evidence suggests visual contour assimilation contributes to the solid-superiority effect.
  • Specific elements related to the Müller-Lyer illusion were implicated.

    • Conclusions:

    • The solid-superiority effect is a robust visual phenomenon.
    • Contour assimilation and Müller-Lyer illusion principles likely explain the enhanced perception of solid objects over outlines.