Font size modulates saccade-target selection in Chinese reading
Font size modulates saccade-target selection in Chinese reading
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DOI：
10.3758/s13414-010-0029-y
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发表时间：
2011-02-01
影响因子：
1.7
通讯作者：
Kliegl, Reinhold
中科院分区：
文献类型：
--
作者：
Shu, Hua;Zhou, Wei;Kliegl, Reinhold
在字母书写系统中，扫视幅度（与阅读速度密切相关）与字体大小无关，大概是因为字母角度大小的增加可以通过偏心率引起的视力下降来补偿。我们认为这种不变性可能（也）是由于单词之间存在空格，引导眼睛浏览大范围的字体大小。在这里，我们测试了阅读中文时扫视幅度是否也不受字体大小操作的影响，中文是一种基于字符的书写系统，没有空格作为扫视目标选择的明确单词边界。与字距字母书写系统相比，扫视幅度随着字体大小的增加而显着减小，导致单词开头的注视次数和重新注视次数增加。这些结果与假设如果中心凹旁单词的长度不可用，则单词开头（而不是单词中心）是默认扫视目标的模型一致。
In alphabetic writing systems, saccade amplitude (a close correlate of reading speed) is independent of font size, presumably because an increase in the angular size of letters is compensated for by a decrease of visual acuity with eccentricity. We propose that this invariance may (also) be due to the presence of spaces between words, guiding the eyes across a large range of font sizes. Here, we test whether saccade amplitude is also invariant against manipulations of font size during reading Chinese, a character-based writing system without spaces as explicit word boundaries for saccade-target selection. In contrast to word-spaced alphabetic writing systems, saccade amplitude decreased significantly with increased font size, leading to an increase in the number of fixations at the beginning of words and in the number of refixations. These results are consistent with a model which assumes that word beginning (rather than word center) is the default saccade target if the length of the parafoveal word is not available.