数学流畅性与非计时数学表现、解码流畅性和非计时阅读表现具有不同的病因学：来自一项双胞胎研究的证据。
Math fluency is etiologically distinct from untimed math performance, decoding fluency, and untimed reading performance: evidence from a twin study.
机构信息
Ohio State University, Columbus, OH 43210, USA.
出版信息
J Learn Disabil. 2012 Jul-Aug;45(4):371-81. doi: 10.1177/0022219411407926. Epub 2011 Sep 2.
Abstract
The authors examined whether math fluency was independent from untimed math and from reading using 314 pairs of school-aged twins drawn from the Western Reserve Reading and Math Projects. Twins were assessed through a 90-min home visit at approximately age 10 and were reassessed in their homes approximately 1 year later. Results suggested that the shared environment and genetics influenced the covariance among math fluency, untimed math measures, and reading measures. However, roughly two thirds of the variance in math fluency was independent from untimed math measures and reading, including reading fluency. The majority of this independent variance was the result of genetic factors that were longitudinally stable across two measurement occasions. These results suggest that math fluency, although related to other math measures, may also be a genetically distinct dimension of mathematics performance.
摘要
作者通过从西储备阅读和数学项目中抽取的 314 对学龄双胞胎，研究了数学流畅性是否独立于无时间限制的数学和阅读。双胞胎通过大约 10 岁时的 90 分钟家访进行评估，并在大约一年后在家中进行重新评估。结果表明，共享环境和遗传因素影响了数学流畅性、无时间限制的数学测量和阅读测量之间的协方差。然而，数学流畅性的大约三分之二的方差与无时间限制的数学测量和阅读（包括阅读流畅性）无关，包括阅读流畅性。这种独立方差的大部分是遗传因素的结果，这些遗传因素在两个测量时间点之间是纵向稳定的。这些结果表明，数学流畅性虽然与其他数学测量有关，但也可能是数学表现的一个具有遗传差异的维度。
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