What are the shapes of response time distributions in visual search?

What are the shapes of response time distributions in visual search?
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DOI:
10.1037/a0020747
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发表时间:
2011-02
影响因子:
2.1
通讯作者:
Wolfe, Jeremy M.
Wolfe, Jeremy M.
中科院分区:
心理学3区
文献类型:
--
作者:
Palmer, Evan M.;Horowitz, Todd S.;Torralba, Antonio;Wolfe, Jeremy M.

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许多视觉搜索实验将反应时间(RT)作为主要因变量。分析通常关注平均(或中值)RT。然而,如果有足够的数据,RT 分布可以成为丰富的信息源。在本文中,我们在三个经典搜索任务中的每一个中,每个观察者的每个细胞收集了大约 500 次针对存在目标和不存在目标的显示的试验:特征搜索,其中目标由颜色定义;联合搜索,目标由颜色和方向定义;空间配置搜索干扰项 5 中的 2。这个大数据集使我们能够详细描述 RT 分布的特征。我们提出了原始 RT 分布,并将几个心理动机函数(前高斯函数、前沃尔德函数、伽玛函数和威布尔函数)与数据进行拟合。我们在视觉搜索理论的背景下分析和解释这四个函数的参数趋势。
Many visual search experiments measure reaction time (RT) as their primary dependent variable. Analyses typically focus on mean (or median) RT. However, given enough data, the RT distribution can be a rich source of information. For this paper, we collected about 500 trials per cell per observer for both target-present and target-absent displays in each of three classic search tasks: feature search, with the target defined by color; conjunction search, with the target defined by both color and orientation; and spatial configuration search for a 2 among distractor 5s. This large data set allows us to characterize the RT distributions in detail. We present the raw RT distributions and fit several psychologically motivated functions (ex-Gaussian, ex-Wald, Gamma, and Weibull) to the data. We analyze and interpret parameter trends from these four functions within the context of theories of visual search.
DOI: 10.1016/s0022-2496(03)00063-4
发表时间: 2003-10-01
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