More than just finding color: strategy in global visual search is shaped by learned target probabilities.
More than just finding color: strategy in global visual search is shaped by learned target probabilities.
复制标题
不仅仅是寻找颜色：全局视觉搜索的策略是由学习到的目标概率决定的。
DOI：
10.1037/a0013900
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Stroud,MichaelJ
中科院分区：
文献类型：
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作者：
Williams,CarrickC;Pollatsek,Alexander;Cave,KyleR;Stroud,MichaelJ
在2个实验中，眼球运动进行了检查，在搜索中的元素被分为四个9项集群。目标（红色或蓝色T）是预先已知的，每个簇包含不同数量的目标颜色元素。颜色的使用是由目标出现在某个颜色类型的聚类中的概率决定的，而不是由聚类的颜色组成不变地引导搜索的顺序：当目标在包含目标颜色的任何聚类中的可能性相等时，注视被大致相等地引导到那些聚类，但是当目标更可能出现在具有更多目标颜色项目的集群中时，这些集群可能更快地被固定。(The目标概率引导搜索而无需明确指令。一旦固定，在集群中花费的时间取决于目标颜色元素的数量，与仅搜索这些元素一致。因此，集群间搜索的影响，由颜色或颜色比的量信号的全局目标概率，而集群内搜索直接驱动的存在下的目标颜色。（PsycINFO数据库记录（c）2016阿帕，保留所有权利）
In 2 experiments, eye movements were examined during searches in which elements were grouped into four 9-item clusters. The target (a red or blue T) was known in advance, and each cluster contained different numbers of target-color elements. Rather than color composition of a cluster invariantly guiding the order of search though clusters, the use of color was determined by the probability that the target would appear in a cluster of a certain color type: When the target was equally likely to be in any cluster containing the target color, fixations were directed to those clusters approximately equally, but when targets were more likely to appear in clusters with more target-color items, those clusters were likely to be fixated sooner.(The target probabilities guided search without explicit instruction.) Once fixated, the time spent within a cluster depended on the number of target-color elements, consistent with a search of only those elements. Thus, between-cluster search was influenced by global target probabilities signaled by amount of color or color ratios, whereas within-cluster search was directly driven by presence of the target color.(PsycINFO Database Record (c) 2016 APA, all rights reserved)