Evidence for direct retrieval of relative quantity information in a quantity judgment task: decimals, integers, and the role of physical similarity.

Evidence for direct retrieval of relative quantity information in a quantity judgment task: decimals, integers, and the role of physical similarity.
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DOI:
10.1037/a0020212
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发表时间:
2010-11
影响因子:
2.6
通讯作者:
Cohen, Dale J.
Cohen, Dale J.
中科院分区:
心理学2区
文献类型:
--
作者:
Cohen, Dale J.

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参与者的反应时间在数字判断任务中,其中一个必须确定两个数字中的哪一个更大,通常遵循两个数字之间的数字距离的单调递减函数。在这里,我提出了三个实验,评估在使用整数和小数作为刺激的任务中数值距离和物理相似性的相对影响。数据显示,数字距离是控制参与者的RT时,整数的主要特征。然而,当出现小数时,标准和探针的十位之间的物理相似性是控制参与者RT的主要特征。我的结论是,小数的独特品质不借给自己分享整数的地方编码表示,从而判断小数的相对数量的直接检索机制已经开发。
Participants' reaction times in numerical judgment tasks in which one must determine which of two numbers are greater generally follow a monotonically decreasing function of the numerical distance between the two presented numbers. Here, I present three experiments that assess the relative influences of numerical distance and physical similarity in just such a task using integers and decimals as stimuli. The data reveal that numerical distance is the primary feature controlling participants' RTs when integers are presented. However, the physical similarity between the decade place of the standard and the probe is the primary feature controlling participants' RTs when decimals are presented. I conclude that the unique qualities of decimals do not lend themselves to share the place coding representation of integers, thus a direct retrieval mechanism for judging the relative quantity of decimals has developed.
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