Walenchok Stephen C, Hout Michael C, Goldinger Stephen D
Department of Psychology, Arizona State University, P.O. Box 871104, Tempe, AZ, 85287-1104, USA.
New Mexico State University, Las Cruces, NM, USA.
Atten Percept Psychophys. 2016 Nov;78(8):2633-2654. doi: 10.3758/s13414-016-1184-6.
During visual search, people are distracted by objects that visually resemble search targets; search is impaired when targets and distractors share overlapping features. In this study, we examined whether a nonvisual form of similarity, overlapping object names, can also affect search performance. In three experiments, people searched for images of real-world objects (e.g., a beetle) among items whose names either all shared the same phonological onset (/bi/), or were phonologically varied. Participants either searched for 1 or 3 potential targets per trial, with search targets designated either visually or verbally. We examined standard visual search (Experiments 1 and 3) and a self-paced serial search task wherein participants manually rejected each distractor (Experiment 2). We hypothesized that people would maintain visual templates when searching for single targets, but would rely more on object names when searching for multiple items and when targets were verbally cued. This reliance on target names would make performance susceptible to interference from similar-sounding distractors. Experiments 1 and 2 showed the predicted interference effect in conditions with high memory load and verbal cues. In Experiment 3, eye-movement results showed that phonological interference resulted from small increases in dwell time to all distractors. The results suggest that distractor names are implicitly activated during search, slowing attention disengagement when targets and distractors share similar names.
在视觉搜索过程中,人们会被视觉上类似于搜索目标的物体分散注意力;当目标和干扰物具有重叠特征时,搜索就会受到影响。在本研究中,我们考察了一种非视觉形式的相似性,即重叠的物体名称,是否也会影响搜索性能。在三个实验中,人们在名称要么都具有相同语音起始(/bi/),要么语音不同的物品中搜索现实世界物体的图像(例如甲虫)。参与者每次试验要么搜索1个要么搜索3个潜在目标,搜索目标通过视觉或语言指定。我们考察了标准视觉搜索(实验1和3)以及一项自定节奏的序列搜索任务,其中参与者手动排除每个干扰物(实验2)。我们假设,人们在搜索单个目标时会保持视觉模板,但在搜索多个目标以及目标通过语言提示时会更多地依赖物体名称。这种对目标名称的依赖会使表现容易受到发音相似的干扰物的影响。实验1和2在高记忆负荷和语言提示的条件下显示出了预期的干扰效应。在实验3中,眼动结果表明,语音干扰是由于对所有干扰物的注视时间略有增加所致。结果表明,在搜索过程中干扰物的名称会被隐性激活,当目标和干扰物名称相似时会减缓注意力的脱离。