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Word Reading Fluency: Role of Genome-Wide Single-Nucleotide Polymorphisms in Developmental Stability and Correlations with Print Exposure
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Harlaar, Nicole; Trzaskowski, Maciej; Dale, Philip S.; Plomin, Robert – Child Development, 2014
The genetic effects on individual differences in reading development were examined using genome-wide complex trait analysis (GCTA) in a twin sample. In unrelated individuals (one twin per pair, n = 2,942), the GCTA-based heritability of reading fluency was ~20%-29% at ages 7 and 12. GCTA bivariate results showed that the phenotypic stability of…
Descriptors: Reading Skills, Twins, Genetics, Individual Differences
Individual Differences in Lexical Processing at 18 Months Predict Vocabulary Growth in Typically Developing and Late-Talking Toddlers
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Fernald, Anne; Marchman, Virginia A. – Child Development, 2012
Using online measures of familiar word recognition in the looking-while-listening procedure, this prospective longitudinal study revealed robust links between processing efficiency and vocabulary growth from 18 to 30 months in children classified as typically developing (n = 46) and as "late talkers" (n = 36) at 18 months. Those late talkers who…
Descriptors: Individual Differences, Word Recognition, Language Proficiency, Language Processing
Individual Differences in Strategy Choices: Good Students, Not-So-Good Students, and Perfectionists.
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Siegler, Robert S. – Child Development, 1988
Issues include consistent individual differences in children's strategy choices, interpretation of differences within a framework, and the relation of differences to standardized test performance. (RJC)
Descriptors: Academic Achievement, Addition, Cognitive Processes, Elementary Education
A Developmental Approach to Reading Disability: Accuracy and Speed Criteria of Normal and Deficient Reading Skill.
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Lovett, Maureen W. – Child Development, 1987
Accuracy-disabled and rate-disabled young Canadian readers were compared to children who were "fluent normal" readers. Children in the latter group decoded at the same level of accuracy as the rate-disabled subjects but at a significantly faster rate. Specific deficiencies of each of the disabled groups were identified. (Author/RH)
Descriptors: Children, Definitions, Foreign Countries, Individual Differences
The Role of Word Shape as a Recognition Cue in Children's Automatic Word Processing.
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Guttentag, Robert – Child Development, 1981
Third- and fifth-grade children were presented with a picture-naming interference task to examine the effects of printing words in mixed typecase on children's automatic word processing. (Author/MP)
Descriptors: Age Differences, Decoding (Reading), Elementary Education, Elementary School Students