A double-dissociation in infants' representations of object arrays

A double-dissociation in infants' representations of object arrays
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DOI:
10.1016/j.cognition.2004.07.006
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发表时间:
2005-04-01
期刊:
影响因子:
3.4
通讯作者:
Feigenson, L
Feigenson, L
中科院分区:
心理学2区
文献类型:
--
作者:
Feigenson, L

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先前的研究表明,婴儿可以计算总的连续范围(例如,克利尔菲尔德,M.W.,P Mix,K.S.(1999年)。数字与轮廓长度在婴儿小视觉集合辨别中的作用Psychological Science,10(5),408-411; Feigenson,L.,P Carey,S.(2003年)的报告。通过目标文件跟踪个人:来自婴儿手动搜索的证据。Developmental Science,6,568-584)或数量性(Feigenson,L.,P Carey,S.(2003年)的报告。通过目标文件跟踪个人:来自婴儿手动搜索的证据。Developmental Science,6,568-584)的小物体阵列。目前的实验询问婴儿是否可以计算给定数组的范围和数量。实验1使用了一个习惯化的程序,以表明7个月大的婴儿可以计算数字时,在数组中的对象的颜色,图案和纹理的对比。实验2表明,这些异质阵列,婴儿不再代表阵列的总连续范围。由于以前的工作表明,婴儿计算连续的程度,但不是数字时,对象具有相同的,而不是对比的属性,这些结果形成了双重分离。婴儿计算的数量,但不超过对比对象的表征范围,和计算的范围,但不超过相同的对象的表征数量。(c)2004 Elsevier B. V.保留所有权利。
Previous studies show that infants can compute either the total continuous extent (e.g. Clearfield, M.W., P Mix, K.S. (1999). Number versus contour length in infants' discrimination of small visual sets. Psychological Science, 10(5), 408-411; Feigenson, L., P Carey, S. (2003). Tracking individuals via object-files: evidence from infants' manual search. Developmental Science, 6, 568-584) or the numerosity (Feigenson, L., P Carey, S. (2003). Tracking individuals via object-files: evidence from infants' manual search. Developmental Science, 6, 568-584) of small object arrays. The present experiments asked whether infants can compute both extent and number over a given array. Experiment 1 used a habituation procedure to show that 7-month-old infants can compute numerosity when the objects in the array contrast in color, pattern, and texture. Experiment 2 revealed that, with these heterogeneous arrays, infants no longer represent the array's total continuous extent. Since previous work shows that infants compute continuous extent but not numerosity when objects have identical rather than contrasting properties, these results form a double dissociation. Infants computed number but not extent over representations of contrasting objects, and computed extent but not number over representations of identical objects. (c) 2004 Elsevier B.V. All rights reserved.