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In perceptual constancy, distance constancy refers to the relationship between apparent distance and physical distance.[1]

An example of this would be the moon - when it is near the horizon it is perceived as larger (size constancy) and/or closer to earth than when it is above our heads.

In people diagnosed with schizophreniaEdit

A study found that distance constancy, being closely related to size constancy, was poorer in people with schizophrenia than in a control group (labeled "normals"). "The result of poor distance constancy is that visual perception in schizophrenics is lacking in depth and that these patients live in a 'flatter' world."[2]

  • Visual Auditory Distance Constancy - Researchers explored the relationship between visual and auditory responses and how they influence distance constancy. A study found that at a certain distance, when a sound is sensed, the eye is stimulated slightly before the ear is.[3]


  • Engel, G.R., W.G. Dougherty (03). Visual-Auditory Distance Constancy. Letters to Nature 234: 308.
  • Kuroda, Teruhiko (01). Distance constancy. Psychologische Forschung 34 (3): 199–219.]
  • Weckowicz T.E., R. Sommer and R. Hall (1958). Distance Constancy in Schizophrenic Patients. The British Journal of Psychiatry 104: 1174–1182.

See alsoEdit


  1. (Kuroda 1971, pp. 199–219)
  2. (Weckowicz 1958, pp. 1174–1182)
  3. (Engel 1971, pp. 308)

Further readingEdit

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