Besner Derek, Risko Evan F, Sklair Nathan
Psychology Department, University of Waterloo, Ontario.
Can J Exp Psychol. 2005 Jun;59(2):99-108. doi: 10.1037/h0087465.
One major theory of the relation between spatial attention and visual word recognition holds that the former is a necessary condition for the latter to begin. A different major theory asserts that although spatial attention can facilitate the latter, it is not a necessary condition. These two theories were pitted against each other experimentally. Spatial attention was operationalized in terms of the effect of a spatial precue on the time to name a target word that appeared above or below fixation. A masked prime word was presented before the target. The critical difference between experiments was cue validity (50% in Experiments 1a and 2a and 100% in Experiments 1b and 2b). Repetition priming was observed when the prime appeared in the uncued prime location in Experiments la and 2a but not in Experiments 1b or 2b. These results are inconsistent with the claim that visual word recognition does not depend on spatial attention. Discussion centres on the distribution of spatial attention across target locations as a function of cue validity.
关于空间注意力与视觉单词识别之间的关系，一个主要理论认为，前者是后者开始的必要条件。另一个主要理论则断言，尽管空间注意力可以促进后者，但它并非必要条件。这两种理论在实验中相互对立。空间注意力通过空间预提示对命名出现在注视点上方或下方的目标单词所需时间的影响来操作化。在目标之前呈现一个掩蔽启动词。实验之间的关键差异在于提示有效性（实验1a和2a中为50%，实验1b和2b中为100%）。在实验1a和2a中，当启动词出现在未提示的启动位置时观察到重复启动效应，但在实验1b或2b中未观察到。这些结果与视觉单词识别不依赖于空间注意力的说法不一致。讨论集中在作为提示有效性函数的跨目标位置的空间注意力分布上。
