小孩子可以在小数量的非符号表示上执行什么类型的计算?
1Division of Social Science, The Hong Kong University of Science and Technology, Hong Kong, China.
Open mind : discoveries in cognitive science
|January 16, 2025
概括
孩子们的确切数量表示是灵活的. 四到六岁的孩子成功地使用了小数量数学问题的解决方案作为新问题的输入,在平行个体化系统中显示了计算灵活性.
科学领域:
- 认知发展 认知发展
- 数字认知 数字认知
- 幼儿教育 儿童早期教育
背景情况:
- 儿童拥有两种数量表示系统:对小,精确的数量进行并行个体化,对大数量进行模拟大小系统 (AMS).
- 虽然AMS的计算限制是已知的,但并行个体化系统的容量仍然不太了解.
- 之前的研究表明,在AMS中的衍生解决方案上执行操作存在局限性.
研究的目的:
- 研究幼儿并行个体化系统的计算灵活性.
- 为了检查儿童是否可以使用从非象征性小数量问题中获得的解决方案来执行新的操作.
- 为了比较并行个别化系统和AMS的计算能力.
主要方法:
- 研究人员对99名年龄在4~6岁的美国儿童进行了两项实验.
- 孩子们解决了涉及小,精确数量的非象征性加法和未知的加法问题.
- 该研究评估了儿童使用衍生解决方案作为后续新型非象征性操作的输入的能力.
主要成果:
- 孩子们更容易解决非象征性的小,精确的加法问题,而不是未知的加法问题.
- 成功解决的问题使孩子们能够使用衍生解决方案来解决新的非象征性的小数量问题.
- 这表明了灵活计算的能力,具有精确的数量表示.
结论:
- 平行个体化系统在幼儿中表现出计算灵活性.
- 这与先前在模拟大小系统 (AMS) 中观察到的更有限的计算能力形成鲜明对比.
- 这些发现揭示了表示和操纵小,精确量的计算优点和弱点.
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