Colour and spatial cueing in low-prevalence visual search
Colour and spatial cueing in low-prevalence visual search
复制标题
低流行度视觉搜索中的颜色和空间提示
DOI：
10.1080/17470218.2012.656662
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发表时间：
2012
影响因子：
1.7
通讯作者：
Melina A. Kunar
中科院分区：
文献类型：
--
作者：
N. Russell;Melina A. Kunar
在视觉搜索中，30-40%的目标与2%的患病率被错过，相比之下，7%的目标与50%的患病率（Wolfe，Horowitz和Kenner，2005）。这种“低患病率”（LP）效应被认为是在参与者犯运动错误，改变他们的反应标准和/或过早退出搜索时发生的。我们调查是否颜色和空间线索，提高视觉搜索时，目标具有高患病率（HP），有益的搜索时，目标是罕见的。实验1和2表明，虽然知识的目标的颜色减少总体上错过错误，它并没有消除LP效应，因为更多的目标错过了在LP比在HP。此外，检测到一个罕见的目标显着受损，如果它出现在一个意想不到的颜色，更比如果目标的流行率高（实验2）。实验3表明，如果一个罕见的目标是外源性线索，目标检测得到改善，但相对于高患病率的条件下仍然受损。此外，如果提示不存在或无效，则错过目标的百分比增加。参与者在所有三个实验中都可以选择纠正运动错误，这减少了但没有消除LP效应。结果表明，虽然有效的颜色和空间线索提高目标检测，参与者仍然错过了更多的目标在LP比在HP。此外，LP处的无效线索在未命中错误方面是非常昂贵的。我们讨论了我们的研究结果与当前的理论和应用LP搜索。
In visual search, 30–40% of targets with a prevalence rate of 2% are missed, compared to 7% of targets with a prevalence rate of 50% (Wolfe, Horowitz, & Kenner, 2005). This “low-prevalence” (LP) effect is thought to occur as participants are making motor errors, changing their response criteria, and/or quitting their search too soon. We investigate whether colour and spatial cues, known to improve visual search when the target has a high prevalence (HP), benefit search when the target is rare. Experiments 1 and 2 showed that although knowledge of the target's colour reduces miss errors overall, it does not eliminate the LP effect as more targets were missed at LP than at HP. Furthermore, detection of a rare target is significantly impaired if it appears in an unexpected colour—more so than if the prevalence of the target is high (Experiment 2). Experiment 3 showed that, if a rare target is exogenously cued, target detection is improved but still impaired relative to high-prevalence conditions. Furthermore, if the cue is absent or invalid, the percentage of missed targets increases. Participants were given the option to correct motor errors in all three experiments, which reduced but did not eliminate the LP effect. The results suggest that although valid colour and spatial cues improve target detection, participants still miss more targets at LP than at HP. Furthermore, invalid cues at LP are very costly in terms of miss errors. We discuss our findings in relation to current theories and applications of LP search.
影响因子：
4.1
作者：
Wolfe, Jeremy M.;Horowitz, Todd S.;Kibbi, Nour
通讯作者：
Kibbi, Nour
影响因子：
1.8
作者：
Hunt AR;Cavanagh P
通讯作者：
Cavanagh P