解除童年词汇爆炸的作用
1Department of Psychology, E11 SSH, University of Iowa, Iowa City, IA 52242, USA. bob-mcmurray@uiowa.edu
概括
儿童在幼儿时代快速学习单词不需要特殊的大脑变化. 数学模型表明,词汇获取的加速是同时学习许多单词的自然结果.
科学领域:
- 发展心理学是发展心理学.
- 认知科学是一种认知科学.
- 语言学的语言学.
背景情况:
- 儿童在生命的第二年经历了词汇获取的戏剧性加速.
- 这种现象促使人们对语言学习的专门认知机制提出理论.
- 之前的模型建议为快速词汇增长提供独特的适应.
研究的目的:
- 调查是否需要专门的认知机制来实现词汇获取的观察到的加速.
- 确定数学模型是否可以解释词汇增长而不需要调用独特的学习适应.
- 探索词汇获取自然加速的条件.
主要方法:
- 利用模拟和数学分析来建模单词学习过程.
- 检查了同时学习多个单词的影响.
- 分析了词语分布对学习速度的影响.
主要成果:
- 证明了专业的认知变化不需要解释加速的单词学习.
- 表明,同时学习许多单词自然会导致更快的学习率.
- 确定了单词分布 (少数易用,许多难用单词) 作为一个关键因素.
结论:
- 幼儿词语学习的快速增长是一般学习原则的副产品.
- 单词的并行学习和特定的单词分布足够解释了词汇加速.
- 不需要专门的认知机制;模式来自于学习过程本身.
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