The effects of maternal input on language in the absence of genetic confounds: Vocabulary development in internationally adopted children

被引:7
|
作者
Coffey, Joseph R. [1 ]
Shafto, Carissa L. [1 ]
Geren, Joy C. [1 ]
Snedeker, Jesse [1 ]
机构
[1] Harvard Univ, Dept Psychol, 33 Kirkland St,William James Hall 1080, Cambridge, MA 02138 USA
基金
美国国家科学基金会;
关键词
MULTIVARIATE PATH-ANALYSIS; ENVIRONMENTAL-INFLUENCES; SOCIOECONOMIC-STATUS; DIRECTED SPEECH; COMMUNICATIVE DEVELOPMENT; COGNITIVE-DEVELOPMENT; TODDLER VOCABULARY; HERITABILITY; GROWTH; TWIN;
D O I
10.1111/cdev.13688
中图分类号
G44 [教育心理学];
学科分类号
0402 ; 040202 ;
摘要
Previous studies have found correlations between parent input and child language outcomes, providing prima facie evidence for a causal relation. However, this could also reflect the effects of shared genes. The present study removed this genetic confound by measuring English vocabulary growth in 29 preschool-aged children (21 girls) aged 31-73 months and 17 infants (all girls) aged 15-32 months adopted from China and Eastern Europe and comparing it to speech produced by their adoptive mothers. Vocabulary growth in both groups was correlated with maternal input features; in infants with mean-length of maternal utterance, and in preschoolers with both mean-length of utterance and lexical diversity. Thus, input effects on language outcomes persist even in the absence of genetic confounds.
引用
收藏
页码:237 / 253
页数:17
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