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Aging and Pattern Complexity Effects on the Visual Span: Evidence from Chinese Character Recognition.

Fang Xie1, Lin Li1, Sainan Zhao1

  • 1Academy of Psychology and Behavior, Tianjin Normal University, Hexi District, Tianjin 300374, China.

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Summary

Older adults show significantly reduced visual span for complex Chinese characters, impacting reading speed more than in younger adults. This highlights age-related challenges in reading visually complex scripts.

Keywords:
Chinese readingagingcharacter recognitionvisual span

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Linguistics

Background:

  • Pattern complexity, measured by stroke count, is theorized to limit visual span for Chinese characters.
  • Visual span is crucial for reading speed, and age-related differences may exist in processing complex visual information.

Purpose of the Study:

  • To investigate age differences in the visual span for Chinese characters based on pattern complexity.
  • To examine how pattern complexity affects visual span in young and older adults.
  • To determine the relationship between visual span and reading speed across different age groups.

Main Methods:

  • Young (18-30 years) and older (60+ years) adults participated in the study.
  • Participants viewed trigrams of Chinese characters varying in complexity (low, medium, high) at different visual locations.
  • Reading speed was assessed using a sentence reading task.

Main Results:

  • Visual span was smaller for high complexity stimuli than for low and medium complexity stimuli in both age groups.
  • The effect of pattern complexity on visual span was more pronounced in older adults.
  • Older adults exhibited a nearly halved visual span for high complexity characters compared to younger adults, with minimal age differences for simpler characters.
  • Visual span size correlated with sentence reading speed for both age groups.

Conclusions:

  • Pattern complexity significantly impacts visual span, with a greater effect observed in older adults.
  • Age-related declines in visual span for complex Chinese characters contribute to reading difficulties in older populations.
  • The findings underscore the role of visual span as a perceptual constraint on reading speed, particularly for visually demanding scripts like Chinese.