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Related Experiment Videos

Developmental changes in the visual span for reading.

Miyoung Kwon1, Gordon E Legge, Brock R Dubbels

  • 1Department of Psychology, University of Minnesota, Elliott Hall, 75 East River Rd., Minneapolis, MN 55455, USA.

Vision Research
|September 12, 2007
PubMed
Summary
This summary is machine-generated.

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The size of the visual span for reading increases with grade level in children and is strongly linked to their reading speed. This suggests early visual processing significantly impacts reading skill development.

Area of Science:

  • Developmental psychology
  • Cognitive science
  • Vision science

Background:

  • The visual span, the range of letters readable without eye movements, is thought to be limited by early visual processing.
  • Previous research hypothesizes that visual span size fundamentally limits reading speed.

Purpose of the Study:

  • To investigate developmental changes in visual span size in school-age children.
  • To determine the impact of visual span development on children's reading speed.

Main Methods:

  • Visual span profiles were measured in 3rd, 5th, 7th graders, and adults using trigram recognition tasks.
  • Letter recognition accuracy was assessed at varying positions and two print sizes (0.25 and 1.0 degrees).
  • Reading speed was measured using Rapid Serial Visual Presentation (RSVP) and Flashcard presentation.

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Main Results:

  • Visual span size increased linearly with grade level.
  • Visual span size was significantly correlated with reading speed across both measurement methods.
  • Visual span size accounted for 34-52% of the variability in reading speeds.

Conclusions:

  • The size of the visual span is a critical factor in the development of reading speed.
  • Early visual processing plays a significant role in the development of reading skills.