Dissociating spatial and letter-based word length effects observed in readers' eye movement patterns
Dissociating spatial and letter-based word length effects observed in readers' eye movement patterns
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DOI：
10.1016/j.visres.2011.05.015
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发表时间：
2011-08-01
期刊：
影响因子：
1.8
通讯作者：
Aro, Mikko
中科院分区：
文献类型：
--
作者：
Hautala, Jarkko;Hyona, Jukka;Aro, Mikko
在以往关于字长效应的眼动研究中，空间宽度一直与字母数量相混淆。McDonald（2006）通过将句子中的所有单词呈现为恒定的空间宽度来消除这些因素。在本研究中，使用字母间距成比例的Anal字体在空间宽度相等的情况下改变字母数量，而使用字母间距为等宽的Courier字体来衡量空间宽度对观察到的单词长度效应的贡献。单词的字母数影响目标单词的单次注视时间，而单词的空间宽度决定了单词的注视位置和跳过单词的概率。结果支持存在不同的子系统来决定在文本中移动眼睛的位置和时间（Rayner & McConkie, 1976）。注视时间的字母数效应可以用视觉敏锐度、视觉拥挤和/或连续字母处理来解释。(C) 2011 Elsevier Ltd.版权所有。
In previous eye movement research on word length effects, spatial width has been confounded with the number of letters. McDonald (2006) unconfounded these factors by rendering all words in sentences in constant spatial width. In the present study, the Anal font with proportional letter spacing was used for varying the number of letters while equating for spatial width, while the Courier font with monospaced letter spacing was used to measure the contribution of spatial width to the observed word length effect. Number of letters in words affected single fixation duration on target words, whereas words' spatial width determined fixation locations in words and the probability of skipping a word. The results support the existence of distinct subsystems for deciding where and when to move eyes in text (Rayner & McConkie, 1976). The number-of-letters effect in fixation duration may be explained by visual acuity, visual crowding, and/or serial letter processing. (C) 2011 Elsevier Ltd. All rights reserved.