Visual marking: Dissociating effects of new and old set size
Visual marking: Dissociating effects of new and old set size
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DOI：
10.1037//0278-7393.28.2.293
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发表时间：
2002-03-01
影响因子：
2.6
通讯作者：
Marks, LE
中科院分区：
文献类型：
--
作者：
Jiang, YH;Chun, MM;Marks, LE
视觉标记可以在搜索过程中忽略旧项目。在一个典型的研究中，旧项目在添加相同数量的新项目之前预览1秒，其中一个是目标。预览一半的项目减少了搜索斜率相关的响应时间（RT）的整体设置大小的一半。然而，这种操作有时只会降低整体RT，但不会降低搜索斜率（实验1）。通过正交变化的数量的旧的和新的项目，实验2表明，旧的和新的集大小交互影响视觉标记。给定一个恒定的新集的大小，旧集的大小对RT的影响可以忽略不计。然而，增加新集的大小减少了预览的好处，在整体RT。实验3表明，这种减少可能仅限于使用时间隔离线索的范例。研究应正交地改变新旧组的大小，以避免在可能存在视觉标记效应的情况下错过视觉标记效应。
Visual marking makes it possible to ignore old items during search. In a typical study, old items are previewed 1 s before adding an equal number of new items, one of which is the target. Previewing half of the items reduces the search slope relating response time (RT) to overall set size by half. However, this manipulation sometimes only reduces overall RT but not search slope (Experiment 1). By orthogonally varying the numbers of old and new items, Experiment 2 shows that old and new set sizes interactively affect visual marking. Given a constant new set size, the size of the old set has negligible effect on RT. However, increasing the new set size reduces the preview benefit in overall RT. Experiment 3 shows that this reduction may be restricted to paradigms that use temporal segregation cues. Studies should vary old and new set size orthogonally to avoid missing a visual marking effect where one may be present.