Visual search for features and conjunctions in development
Visual search for features and conjunctions in development
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DOI：
10.1037/h0087293
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发表时间：
1998-12-01
影响因子：
1.3
通讯作者：
Rovet, JF
中科院分区：
文献类型：
--
作者：
Lobaugh, NJ;Cole, S;Rovet, JF
视觉搜索表现在三组7至12岁的儿童和年轻人中进行了检查。进行了颜色和方向特征搜索和连接搜索。反应时间（RT）显示出预期的处理速度随年龄增长而提高。目标存在和目标缺失试验的RTs比较符合两种特征条件下的平行搜索和联合条件下的串行搜索。RT结果表明，儿童和成人对特征和连词的搜索处理相似。然而，最小的孩子们在最大的数组中漏掉了更多的目标，最明显的是在联合搜索中。基于对速度/准确性权衡的分析，我们认为低目标-干扰物可辨别性导致阵列元素的采样不足，并导致最小儿童的高漏检率。
Visual search performance was examined in three groups of children 7 to 12 years of age and in young adults. Colour and orientation feature searches and a conjunction search were conducted. Reaction time (RT) showed expected improvements in processing speed with age. Comparisons of RTs on target-present and target-absent trials were consistent with parallel search on the two feature conditions and with serial search in the conjunction condition. The RT results indicated searches for feature and conjunctions were treated similarly for children and adults. However, the youngest children missed more targets at the largest array sizes, most strikingly in conjunction search. Based on an analysis of speed/accuracy trade-offs, we suggest that low target-distractor discriminability leads to an undersampling of array elements, and is responsible for the high number of misses in the youngest children.