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相关概念视频

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Apart from the measures of central tendency, distribution, outliers, and the changing characteristics of data with time, an important characteristic of any data set is its variation or spread. In some data sets, the data values are concentrated closely near the mean; in others, the data values are more widely spread out from the mean.
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我们应该停止在儿童语言样本分析中使用词汇多样性测量方法吗?

Nan Bernstein Ratner1, Youngjin Han2, Ji Seung Yang2

  • 1Hearing and Speech Sciences, Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD.

American journal of speech-language pathology
|June 5, 2024
PubMed
概括
此摘要是机器生成的。

类型标记比率 (TTR) 和不同单词数量 (NDW) 在评估儿童的语言技能方面是不可靠的. 词汇多样性 (VocD) 是更敏感的,但需要实际的替代方案用于临床使用.

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科学领域:

  • 语言学的语言学.
  • 发展心理学 发展心理学
  • 语音语言病理学 语言病理学

背景情况:

  • 像类型标记比率 (TTR) 这样的词汇多样性指数通常用于分析口语样本.
  • 之前的研究表明,TTR容易受到样本大小和提取方法的变化的影响.
  • 标准化提示可能会提高儿童词汇多样性测量的可靠性.

研究的目的:

  • 评估不同词汇多样性测量对儿童年龄和临床状况 (通常是发育与发育性语言障碍) 的敏感性.
  • 为了比较类型标记比率 (TTR),不同单词数/100 (NDW) 和词汇多样性 (VocD) 的心理测量属性.
  • 确定可靠的措施来评估儿童的表达词汇.

主要方法:

  • 分析了1048名4至11岁儿童的档案数据 (798名典型发育,250名发育性语言障碍).
  • 使用TTR,NDW和VocD从标准化的叙事提示中获得的词汇多样性的检查.
  • 对年龄和诊断组差异的测量灵敏度的比较.

主要成果:

  • 类型标记比率 (TTR) 对年龄和诊断组的敏感性较低,有可能错误分类.
  • 不同单词的数量/100 (NDW) 对诊断分组的敏感性有限.
  • 词汇多样性 (VocD) 成为最敏感的指标,表现优于TTR和NDW.
  • 其他措施,如发言的平均长度和动词密度,也显示出良好的增长和诊断歧视.

结论:

  • 类型标记比 (TTR) 不推用于儿童语言评估中的临床决策.
  • 不同单词数量 (NDW) 与TTR相比没有显著的心理测量优势.
  • 词汇多样性 (VocD) 是最敏感的指标,但需要计算机辅助分析.
  • 需要使用替代的实用方法来评估儿童在临床环境中的表达词汇技能.