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.
中科院分区:
文献类型:
--
作者:
Cohen, Dale J.
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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