Henderson J M, Ferreira F
Department of Psychology, University of Alberta, Edmonton, Canada.
J Exp Psychol Learn Mem Cogn. 1990 May;16(3):417-29. doi: 10.1037//0278-7393.16.3.417.
Two experiments were conducted to examine the effects of foveal processing difficulty on the perceptual span in reading. Subjects read sentences while their eye movements were recorded. By changing the text contingent on the reader's current point of fixation, foveal processing difficulty and the availability of parafoveal word information were independently manipulated. In Experiment 1, foveal processing difficulty was manipulated by lexical frequency, and in Experiment 2 foveal difficulty was manipulated by syntactic complexity. In both experiments, less parafoveal information was acquired when processing in the fovea was difficult. We conclude that the perceptual span is variable and attentionally constrained. We also discuss the implications of the results for current models of the relation between covert visual-spatial attention and eye movement control in reading.
进行了两项实验，以检验中央凹加工难度对阅读中知觉广度的影响。受试者阅读句子时，其眼动会被记录下来。通过根据读者当前注视点改变文本，独立操纵中央凹加工难度和副中央凹单词信息的可用性。在实验1中，通过词汇频率操纵中央凹加工难度，在实验2中，通过句法复杂性操纵中央凹难度。在两项实验中，当中央凹加工困难时，获得的副中央凹信息较少。我们得出结论，知觉广度是可变的且受注意力限制。我们还讨论了这些结果对当前关于阅读中隐蔽视觉空间注意力与眼动控制关系模型的意义。
