Attention Capture and Visual Search Behavioral Data and Stimuli

These are the complete datasets for Experiment 1-3 of the manuscript currently titled "Diagnostic parts are not exclusive in the search template for real-world object categories" by Marcel Wurth and Reshanne R. Reeder. This study contains a direct replication of Experiment 4 from Reeder & Peelen (2013), and two follow-up experiments. In each experiment, subjects were cued to search for cars and people in natural scenes (75% of trials) either presented to the left and right of a central fixation (Exp.1) or above and below fixation (Exp.2&3). On a subset of trials (25% of trials), subjects were instructed only to respond to the location of a black dot that appeared on the left or right of fixation. Capture stimuli (the silhouettes) appeared prior to the dot, but subjects were told to ignore these to the best of their ability. One car and one person silhouette appeared on each capture trial and appeared an equal number of times on the left and right of fixation. The location of the target-matching silhouette was tied to the same side of fixation as the dot-probe on half of trials (consistent trials). The target-matching silhouette appeared on the opposite side of fixation from the dot-probe on the other half of trials (inconsistent trials). In Exp.1&2, capture stimuli were either both whole silhouettes or both single silhouette parts, with these trials randomly mixed within a block. In Exp.3, capture stimuli were either both whole silhouettes or both collections of silhouette parts. Our main goal was to find out if subjects performed better on consistent dot-probe trials than on inconsistent dot-probe trials. A consistent trial is defined as a trial on which the cue-matching silhouette appears on the same side of fixation as the dot-probe. An inconsistent trial is a trial on which the cue-matching silhouette appears on the other side of fixation from the dot-probe. We calculated RT from the onset of the dot-probe. Only correct trials were input into the RT analysis. Attention capture was defined as faster RT on consistent trials compared to inconsistent trials. Reeder, R. R., & Peelen, M. V. (2013). The contents of the search template for category-level search in natural scenes. Journal of vision, 13(3). doi:10.1167/13.3.13本数据集为Marcel Wurth与Reshanne R. Reeder撰写、暂题为《真实世界物体类别搜索模板（search template）中的诊断性部件（diagnostic parts）不具有排他性》的手稿中实验1至实验3的完整数据集。本研究直接复刻了Reeder与Peelen（2013）的实验4，并额外开展了两项后续实验。 每项实验中，75%的试次会提示被试在自然场景中搜索汽车与人物，这类刺激呈现于中央注视点（central fixation）的左右两侧（实验1），或上下两侧（实验2与实验3）。剩余25%的试次中，仅要求被试对出现在注视点左侧或右侧的黑点位置做出反应。捕获刺激（capture stimuli，即轮廓剪影（silhouettes））会在黑点出现前呈现，但要求被试尽可能忽略这类刺激。每个捕获试次中会同时呈现一个汽车轮廓与一个人物轮廓，且这两类轮廓在注视点左侧与右侧出现的次数完全相等。在一半的试次（一致性试次（consistent trials））中，匹配目标的轮廓与点探测刺激（dot-probe）位于注视点的同一侧；在另一半试次（非一致性试次（inconsistent trials））中，匹配目标的轮廓与点探测刺激位于注视点的相反两侧。在实验1与实验2中，捕获刺激要么均为完整轮廓，要么均为单一部件轮廓，两类试次会在实验组块（block）中随机混合。在实验3中，捕获刺激要么均为完整轮廓，要么均为多部件轮廓集合。 本研究的核心目标在于探究被试在一致性点探测试次中的表现是否优于非一致性点探测试次。一致性试次指匹配搜索目标的轮廓与点探测刺激位于注视点同一侧的试次；非一致性试次则指匹配搜索目标的轮廓与点探测刺激位于注视点相反两侧的试次。我们以点探测刺激的呈现起始时刻为起点计算反应时（RT），仅将正确试次纳入反应时分析。注意捕获（attention capture）被定义为一致性试次的反应时短于非一致性试次的现象。 参考文献： Reeder, R. R., & Peelen, M. V. (2013). 自然场景中类别级搜索的搜索模板内容. 《Journal of Vision》, 13(3). doi:10.1167/13.3.13