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The Visual Perception of Large-Scale Distances Outdoors.

J Farley Norman1,2, Jessica M Dukes1, Hannah K Shapiro1

  • 1Ogden College of Science and Engineering, Western Kentucky University, United States.

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Older and younger adults accurately perceive outdoor distances. Age does not significantly impact the visual perception of large-scale outdoor distances, suggesting this ability is well-maintained throughout adulthood.

Keywords:
aging, outdoor visiondistance perception

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Area of Science:

  • Visual perception
  • Human factors
  • Gerontology

Background:

  • Accurate perception of outdoor distances is crucial for navigation and safety.
  • Previous research suggests age-related declines in visual perception, particularly for shorter distances.

Purpose of the Study:

  • To evaluate and compare the ability of younger and older adults to visually perceive outdoor distances.
  • To determine if age significantly affects the accuracy and precision of large-scale distance perception.

Main Methods:

  • Utilized the method of equal-appearing intervals with 32 younger (19-32 years) and older (65-83 years) adults.
  • Participants adjusted five distance intervals to appear equivalent to a standard 6m egocentric distance.
  • Judgments were analyzed for accuracy and precision in perceiving outdoor distances.

Main Results:

  • Approximately two-thirds of both younger and older observers showed perceptual compression in their distance judgments.
  • The remaining one-third of observers demonstrated accurate distance perception.
  • No significant differences in accuracy or precision were found between younger and older adults.

Conclusions:

  • The ability to visually perceive large-scale outdoor distances is well-maintained in older adults.
  • Age does not significantly impact the accuracy or precision of judging outdoor distances.
  • Findings contrast with some previous studies on shorter distance perception, highlighting the resilience of large-scale spatial awareness.