Environmental influences on the longitudinal covariance of expressive vocabulary: measuring the home literacy environment in a genetically sensitive design.
Environmental influences on the longitudinal covariance of expressive vocabulary: measuring the home literacy environment in a genetically sensitive design.
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DOI：
10.1111/j.1469-7610.2009.02074.x
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发表时间：
2009-08
期刊：
影响因子：
--
通讯作者：
Cutting LE
中科院分区：
文献类型：
--
作者：
Hart SA;Petrill SA;DeThorne LS;Deater-Deckard K;Thompson LA;Schatschneider C;Cutting LE
尽管家庭识字环境和表达性词汇之间的关系得到了很好的复制，但很少有研究探讨家庭识字环境在多大程度上与遗传影响背景下的早期词汇能力的发展有关。本研究探讨了家庭文化环境对表达性词汇在遗传敏感设计中的纵向协方差的影响。参与者来自西部保护区阅读项目，这是一个位于俄亥俄州的314对双胞胎的纵向双胞胎项目。双胞胎在小学早期通过每年三次的家访进行评估;通过波士顿识字测试（BNT）测量表达词汇，并使用母亲的报告评估家庭识字环境（HLE）。BNT的遗传力是中等的，在每个测量场合，h2 = 0.29 - 0.49，共享环境的估计值，c2 = 0.27 - 0.39。HLE占每年词汇评估总方差的6-10%。此外，7-9%的总方差的稳定性随着时间的推移，在BNT占家庭识字环境的协方差。这些结果表明，家庭识字环境的方面，报告的母亲，占与学龄儿童的表达性词汇的一些共享的环境差异。
Despite the well-replicated relationship between the home literacy environment and expressive vocabulary, few studies have examined the extent to which the home literacy environment is associated with the development of early vocabulary ability in the context of genetic influences. This study examined the influence of the home literacy environment on the longitudinal covariance of expressive vocabulary within a genetically sensitive design. Participants were drawn from the Western Reserve Reading Project, a longitudinal twin project of 314 twin pairs based in Ohio. Twins were assessed via three annual home visits during early elementary school; expressive vocabulary was measured via the Boston Naming Test (BNT), and the Home Literacy Environment (HLE) was assessed using mothers’ report. The heritability of the BNT was moderate and significant at each measurement occasion, h2 = .29–.49, as were the estimates of the shared environment, c2 = .27–.39. HLE accounted for between 6–10% of the total variance in each year of vocabulary assessment. Furthermore, 7–9% of the total variance of the stability over time in BNT was accounted for by covariance in the home literacy environment. These results indicate that aspects of the home literacy environment, as reported by mothers, account for some of the shared environmental variance associated with expressive vocabulary in school aged children.
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影响因子：
3.7
作者：
PAYNE, AC;WHITEHURST, GJ;ANGELL, AL
通讯作者：
ANGELL, AL
影响因子：
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作者：
RICE, T;FULKER, DW;DEFRIES, JC
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DEFRIES, JC
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作者：
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影响因子：
8.2
作者：
Oliver, BR;Dale, PS;Plomin, R
通讯作者：
Plomin, R