Gielen I, Brysbaert M, Dhondt A
University of Leuven, Belgium.
Percept Psychophys. 1991 Nov;50(5):449-58. doi: 10.3758/bf03205061.
Two experiments were run in order to investigate the relationship between syllable length of number names and eye-fixation durations during silent reading of one- and two-digit numbers. In Experiment 1, subjects had to read a series of three numbers and recall them orally; in Experiment 2, subjects had to indicate manually whether the value of the middle number was between the values of the outer numbers. The effect of syllable length was controlled for possible confounding effects of number frequency and number magnitude. Findings indicated that fixation duration depended on syllable length of number names in the first task, but not in the second task. The results call into question the claim that phonological encoding is imperative in visual processing; phonological encoding was used only when the numbers had to be recalled, and not when they were coded for computational purposes.
为了研究数字名称的音节长度与默读一位数和两位数时的眼动注视持续时间之间的关系，进行了两项实验。在实验1中，受试者必须阅读一系列三个数字并口头回忆它们；在实验2中，受试者必须手动指出中间数字的值是否在外围数字的值之间。音节长度的影响在数字频率和数字大小可能产生的混杂效应方面得到了控制。研究结果表明，在第一个任务中，注视持续时间取决于数字名称的音节长度，但在第二个任务中并非如此。这些结果对语音编码在视觉处理中至关重要这一说法提出了质疑；语音编码仅在必须回忆数字时使用，而在为计算目的进行编码时则不使用。
