心理与行为研究 ›› 2018, Vol. 16 ›› Issue (5): 603-611.

• 专题研究 • 上一篇    下一篇

视觉复杂性和字间距调节汉语发展性阅读障碍儿童的视觉拥挤效应:来自眼动的证据

郭志英1, 谭珂2, 宋星2, 彭国慧2, 白学军2   

  1. 1. 天津市教育科学研究院, 天津 300191;
    2. 教育部人文社会科学重点研究基地天津师范大学心理与行为研究院, 天津 300074
  • 收稿日期:2018-06-20 出版日期:2018-09-20 发布日期:2018-09-19
  • 通讯作者: 白学军,E-mail:bxuejun@126.com
  • 基金资助:
    国家自然科学基金项目(81471629)、全国文化名家暨“四个一批”人才工程项目和天津市杰出津门学者计划

The Modulation of Visual Complexity and Character-Spacing on the Visual Crowding Effect of Chinese-Speaking Children with Developmental Dyslexia: Evidence from Eye Movements

GUO Zhiying1, TAN Ke2, SONG Xing2, PENG Guohui2, BAI Xuejun2   

  1. 1. Tianjin Academy of Educational Sciences, Tianjin 300191, China;
    2. Academy of Psychology and Behavior, Tianjin Normal University, Tianjin 300074, China
  • Received:2018-06-20 Online:2018-09-20 Published:2018-09-19

摘要: 采用眼动追踪技术,通过笔画数多少构成高低不同的视觉复杂性,操纵文本的字间距,来考察视觉复杂性和字间距对汉语发展性阅读障碍儿童的视觉拥挤效应的影响。结果发现,阅读障碍儿童阅读低视觉复杂性文本时,随着字间距的不断增加,字间距增加到一定程度时(+6 pt)阅读时间最长、总注视次数最多,随后在本实验字间距最大条件下(+12 pt)阅读时间变短、总注视次数变少,正常儿童不存在这种现象。结果表明,文本阅读中,字间距和视觉复杂性对阅读障碍儿童的视觉拥挤效应起到调节作用,低视觉复杂性文本可以降低阅读障碍儿童的视觉拥挤效应,阅读障碍儿童的视觉拥挤效应强度和字间距大小的数量关系呈非线性。

关键词: 阅读障碍, 视觉拥挤效应, 视觉复杂性, 字间距

Abstract: Visual crowding effect (VCE) is defined as the identification of a center letter being interfered by its flanking letters. Previous studies in alphabetical system languages showed that dyslexics are more influenced by VCE than controls due to their underlying visual deficits. Unlike English, Chinese is a densely-packed language and readers maybe more rely on visual processing to recognize characters, it has found that Chinese dyslexics might exhibit more pronounced visual crowding effect (VCE). In experiment, we manipulate visual complexity of text and character-spacing (default、±3 pt、±6 pt、+12 pt) on Chinese dyslexic children to examine whether visual complexity and character-spacing modulated the VCE in Chinese sentence reading. The results showed that:1) Chinese dyslexics' performances were more influenced by VCE than controls when they read low complexity and high complexity text; 2) Under low complexity text condition, with the character-spacing increased, spacing +6 pt led to worse reading performance for dyslexics, while spacing +12 pt didn't, indicating that enlarging character-spacing facilitates reading performances.The results indicated that 1) low complexity text and character-spacing facilitate the good reading performances for dyslexics; 2) visual complexity and character-spacing modulate the visual crowding effect of dyslexics; 3) the quantity relationship of character-spacing and the VCE need to be further studied.

Key words: dyslexia, visual crowding effect, visual complexity, character-spacing

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