Looking at scenes while searching for numbers: dividing attention multiplies space.
Looking at scenes while searching for numbers: dividing attention multiplies space.
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DOI：
10.3758/pp.70.7.1337
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发表时间：
2008-10
期刊：
影响因子：
--
通讯作者：
Wolfe JM
中科院分区：
文献类型：
--
作者：
Intraub H;Daniels KK;Horowitz TS;Wolfe JM
观察者往往记得看到的场景比显示的更广阔（边界扩展[BE]）。BE需要集中视觉注意力吗？在实验1中，108名观察者观看叠加数字（2s和5s）的照片。每个出现750毫秒，随后是一个掩蔽的间隔和一个测试图片（相同，更近，或更宽的角度）。测试图片在5分制上被评定为相同、更近或更宽的角度。视觉注意力是通过一个搜索任务来操纵的：观察者报告5的数量（0，1或2）。观察者仅进行搜索、仅进行图片评级或两者兼而有之（给予搜索优先权）。搜索精度不受条件影响。BE发生在两种情况下，但更大的分开注意。使用偶然BE试验（实验2和3）重复结果。我们建议，预期表示的布局自动发生在场景感知，与焦点注意力约束的边界错误。
Observers tend to remember seeing a greater expanse of a scene than was shown (boundary extension [BE]). Is undivided visual attention necessary for BE? In Experiment 1, 108 observers viewed photographs with superimposed numerals (2s and 5s). Each appeared for 750 msec, followed by a masked interval and a test picture (same, closer up, or wider angled). Test pictures were rated as the same, closer, or wider angled on a 5-point scale. Visual attention was manipulated with a search task: The observers reported the number of 5s (zero, one, or two). The observers performed search only, picture rating only, or both (giving search priority). Search accuracy was unaffected by condition. BE occurred in both conditions but was greater with divided attention. The results were replicated using incidental BE tests (Experiments 2 and 3). We propose that anticipatory representation of layout occurs automatically during scene perception, with focal attention serving to constrain the boundary error.