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1
Genes influence young children's human figure drawings and their association with intelligence a decade later.
In: Psychol Sci , 25 (10) pp. 1843-1850. (2014) (2014)
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2
Common DNA markers can account for more than half of the genetic influence on cognitive abilities
In: Psychological Science , 24 (4) 562 - 568. (2013) (2013)
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3
A twin study of the genetics of high cognitive ability selected from 11,000 twin pairs in six studies from four countries.
In: Behav Genet , 39 (4) pp. 359-370. (2009) (2009)
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4
Genetic etiology in cases of recovered and persistent stuttering in an unselected, longitudinal sample of young twins
In: In: AMERICAN JOURNAL OF SPEECH-LANGUAGE PATHOLOGY. (pp. 169 - 178). AMER SPEECH-LANGUAGE-HEARING ASSOC (2007) (2007)
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5
Common aetiology for diverse language skills in 4 1/2-year-old twins.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; Scopus (http://www.scopus.com/home.url) ; CrossRef (2006)
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6
Genetic influences in different aspects of language development: the etiology of language skills in 4.5-year-old twins.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; Scopus (http://www.scopus.com/home.url) ; CrossRef (2005)
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7
Genetic and environmental influence on language impairment in 4-year-old same-sex and opposite-sex twins.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; Scopus (http://www.scopus.com/home.url) ; CrossRef (2004)
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8
Outcomes of early language delay: I. Predicting persistent and transient language difficulties at 3 and 4 years.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; Scopus (http://www.scopus.com/home.url) ; CrossRef (2003)
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9
Outcomes of early language delay: II. Etiology of transient and persistent language difficulties.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; Scopus (http://www.scopus.com/home.url) ; CrossRef (2003)
Abstract: Genes are known to play an important role in causing specific language impairment, but it is unclear how far a similar etiology is implicated in transient language delay in early childhood. Two-year-old children with vocabulary scores below the 10th centile were selected from a cohort of over 2,800 same-sex twin pairs whose language was assessed by parental report at 2, 3, and 4 years of age. These children with early language delay (ELD) were divided into cases of transient and persistent language difficulties on the basis of outcome at 3 and 4 years. A DeFries-Fulker analysis (J. C. DeFries and D. W. Fulker, 1985) was used to compute group heritability (h2g) of 2-year vocabulary delay separately for those with transient and persistent difficulties. When 3-year and 4-year language attainments were used to categorize outcomes, h2g was similar and modest (.25 or less) for both transient and persistent difficulties. However, when persistent difficulties were defined according to whether parents expressed concern about language at 3 years or according to whether a professional had been consulted about language difficulties at 4 years, heritability was significantly higher. For 289 children with no professional involvement at 4 years, heritability of 2-year vocabulary delay was close to zero, whereas for 134 children with professional involvement, a significant h2g of .41 (SE = .127) was found. Early language delay appears largely environmental in origin for 2-year-olds whose parents do not go on to seek professional help.
Keyword: Child; Cohort Studies; Diagnosis; Differential; Environment; Female; Humans; Language Development Disorders; Longitudinal Studies; Male; Preschool; Questionnaires; Time Factors; Twins
URL: https://doi.org/10.1044/1092-4388(2003/045
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10
Genetic and environmental mediation of the relationship between language and nonverbal impairment in 4-year-old twins.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; Scopus (http://www.scopus.com/home.url) ; CrossRef (2003)
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11
Genetic and environmental mediation of the relationship between language and nonverbal impairment in 4-year-old twins
In: J SPEECH LANG HEAR R , 46 (6) 1271 - 1282. (2003) (2003)
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12
The structure of language abilities at 4 years: a twin study.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) (2002)
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13
Genetic and environmental origins of verbal and performance components of cognitive delay in 2-year-olds.
In: Symplectic Elements at Oxford ; Europe PubMed Central ; PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) ; Web of Science (Lite) (http://apps.webofknowledge.com/summary.do) ; ORA review team (1999)
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