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Age-related changes in crowding and reading speed.

Rong Liu1, Bhavika N Patel1, MiYoung Kwon2

  • 1Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.

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|August 17, 2017
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Summary
This summary is machine-generated.

Older adults read slower due to increased visual crowding. This age-related decline in visual crowding, affecting reading speed, was observed in older adults compared to younger adults.

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Area of Science:

  • Vision Science
  • Cognitive Aging
  • Human Perception

Background:

  • Crowding, the inability to recognize objects in clutter, influences reading speed during development.
  • Previous research has established crowding's role in developmental reading speed changes.

Purpose of the Study:

  • To investigate the role of crowding in age-related reading speed changes.
  • To compare crowding effects and reading speed between young and older adults.

Main Methods:

  • Recruited 18 young and 21 older adults with normal vision.
  • Measured reading speed using text blocks.
  • Assessed crowding by measuring the crowding zone and visual span across the central visual field using letter-recognition tasks.

Main Results:

  • Older adults showed a 30% decrease in reading speed compared to young adults.
  • Older adults exhibited significantly larger crowding zones (31% increase) and smaller visual spans (6.25 bits decrease).
  • Significant correlations were found between reading speed and crowding measures.

Conclusions:

  • Crowding increases with age.
  • Age-related increases in crowding may partially explain the decline in reading speed observed in older adults.