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首页> 外文期刊>Journal of vision >Visual Searches Need Their Own Personal Space: The Importance of Spacing Between Simultaneously Presented Search Arrays.
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Visual Searches Need Their Own Personal Space: The Importance of Spacing Between Simultaneously Presented Search Arrays.

机译：视觉搜索需要它们自己的个人空间：同时显示的搜索数组之间的间距很重要。

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Visual search, the process of looking for targets amongst distractors, is an everyday activity executed in a variety of contexts. While searches are often mundane (e.g., looking for your keys) they can also be highly important (e.g., airport baggage screeners looking for contraband). Considerable research has examined the nature of visual search accuracy, but how well do the results generalize to real-world visual searches? For example, most cognitive psychology experiments present observers with a single search array and assess how quickly and accurately target(s) are found. However, airport baggage screeners often view displays that contain multiple search arrays (i.e., several bags on the same x-ray monitor), and these search arrays can be close together and/or appear physically connected (e.g., when passengers shove their bags into the x-ray machine). Here we investigated how accuracy is affected when multiple search arrays are simultaneously present, and whether spacing between arrays impacts performance. Experiment 1 presented 3 search arrays, either spaced close together (5-pixel separation) or far apart (100-pixel separation), and each array could contain 0, 1, or 2 targets. Trials progressed by having the arrays physically shift to the edge of the monitor as if on a conveyor belt, and participants were to only search the center array before advancing. Array spacing did not impact response time or accuracy on single- and no-target trials, but did affect dual-target trials: second target accuracy (after having found a first target in the same array) was significantly worse when the arrays were close together than far apart. Experiment 2 compared trials with 3 far-spaced arrays to trials with only a single array, and there were no response time or accuracy differences. Collectively, the results suggest that search array spacing can negatively impact accuracy for dual-target search, which is a particularly complex search process.
机译：视觉搜索是在干扰因素中寻找目标的过程，是在各种情况下执行的日常活动。虽然搜索通常很平常（例如，寻找您的钥匙），但搜索也可能非常重要（例如，机场行李检查员在寻找违禁品）。大量研究检查了视觉搜索准确性的性质，但是结果对现实世界中的视觉搜索的概括程度如何？例如，大多数认知心理学实验为观察者提供了一个搜索阵列，并评估了找到目标的速度和准确性。但是，机场行李检查员通常会查看包含多个搜索阵列的显示器（即，同一台X射线监视器上有多个行李），并且这些搜索阵列可能会靠近在一起和/或看起来是物理连接的（例如，当乘客将其行李推入X光机）。在这里，我们研究了当同时存在多个搜索数组时，精度如何受到影响，以及数组之间的间距是否会影响性能。实验1提出了3个搜索阵列，两个搜索阵列彼此间隔很近（5个像素）或相隔很远（100个像素），每个搜索阵列可以包含0、1或2个目标。通过使阵列实际移动到显示器的边缘（就像在传送带上一样）进行了试验，参与者只能在前进之前搜索中心阵列。阵列间距不会影响单目标试验和无目标试验的响应时间或准确性，但会影响双目标试验：当两个阵列靠近时，第二个目标准确度（在同一阵列中找到第一个目标后）明显较差比分开。实验2将3个远距离阵列的试验与仅单个阵列的试验进行了比较，并且没有响应时间或准确性差异。总的来说，结果表明搜索阵列间距会对双目标搜索的准确性产生负面影响，这是一个特别复杂的搜索过程。

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