Discrimination of large and small numerosities by human infants
Discrimination of large and small numerosities by human infants
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DOI：
10.1207/s15327078in0503_2
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发表时间：
2004-01-01
期刊：
影响因子：
2.6
通讯作者：
Spelke, ES
中科院分区：
文献类型：
--
作者：
Lipton, JS;Spelke, ES
六个实验研究了婴儿在听觉序列中对数字的敏感性。在之前的研究中（Lipton & Spelke，2003），当控制了频率、声音持续时间和序列持续时间等连续变量时，6个月大的婴儿能够区分8个与16个声音的序列，但不能区分8个与12个声音的序列，9个月大的婴儿能够区分8个与12个声音的序列，但不能区分8个与10个声音的序列。本研究探讨了婴儿数字辨别能力是否受成人数字辨别能力特征比率限制的影响。在6个月和9个月的四个实验提供了这个签名限制的证据，表明婴儿和成人的数字识别的共同机制。在进一步的实验中，婴儿在与大量数字相同的条件下测试时，无法区分2与4或2与3的声音。这些发现与使用视觉空间阵列的研究雅阁（例如，克利尔菲尔德和混合，1999年），并建议独立的系统的基础上婴儿的代表性小和大的数字。
Six experiments investigated infants' sensitivity to numerosity in auditory sequences. In prior studies (Lipton & Spelke, 2003), 6-month-old infants discriminated sequences of 8 versus 16 but not 8 versus 12 sounds, and 9-month-old infants discriminated 8 versus 12 but not 8 versus 10 sounds, when the continuous variables of rate, sound duration, and sequence duration were controlled. The current studies investigated whether infants' numerical discrimination is subject to the signature ratio limit of adults' numerosity discrimination. Four experiments at 6 and 9 months provided evidence for this signature limit, suggesting that common mechanisms underlie numerosity discrimination in infants and adults. In further experiments, infants failed to discriminate 2 versus 4 or 2 versus 3 sounds when tested under the same conditions as with large numbers. These findings accord with studies using visual-spatial arrays (e.g., Clearfield & Mix, 1999) and suggest that separate systems underlie infants' representation of small and large numerosities.