2007
DOI: 10.1002/icd.476
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Environmental influences on reading‐related outcomes: an adoption study

Abstract: Evidence from intervention studies, quantitative genetic and molecular genetic studies suggests that genetic, and to a lesser extent, shared environmental influences are important to the development of reading and related cognitive skills. The Northeast‐Northwest Collaborative Adoption Projects (N2CAP) is a sample of 241 adoptive families, containing 354 children and their adoptive parents. Negative parent outcome × child age interactions significantly predicted child outcomes, suggesting that shared environme… Show more

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Cited by 7 publications
(4 citation statements)
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References 50 publications
(57 reference statements)
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“…Although there were significant correlations among some HLE variables, correlations were small to moderate in size, suggesting that these factors are unlikely to tap the same aspects of the HLE. This is consistent with findings from prior studies (e.g., Petrill, Deater-Deckard, Schatschneider, & Davis, 2007;Petrill et al, 2005). Similarly, household quiet and household order were moderately correlated with each other (r =.33), implying that they tap distinct constructs.…”
Section: Household Chaos and Early Readingsupporting
confidence: 91%
“…Although there were significant correlations among some HLE variables, correlations were small to moderate in size, suggesting that these factors are unlikely to tap the same aspects of the HLE. This is consistent with findings from prior studies (e.g., Petrill, Deater-Deckard, Schatschneider, & Davis, 2007;Petrill et al, 2005). Similarly, household quiet and household order were moderately correlated with each other (r =.33), implying that they tap distinct constructs.…”
Section: Household Chaos and Early Readingsupporting
confidence: 91%
“…Given previous findings in typically developing children (e.g., Petrill, Deater-Deckard, Schatschneider, & Davis, 2007;Taylor & Schatschneider, 2010;Turkheimer & Waldron, 2000), we hypothesize that environment-outcome relations will be stronger at lower levels of the distribution. Furthermore, we expect that a number of significant relations will be identified in our "within-child" model and our "social determinants" model, but we specifically hypothesize that, for many children these early disadvantages become sustained or accentuated, rather than fading with time, so that the predictors have a more concentrated effect at the lower end of the distribution of the relation that would otherwise be missed by OLS models but which would be identified in quantile models.…”
mentioning
confidence: 88%
“…Behavioral genetics work focusing on reading comprehension has indicated both significant genetic and environmental factors. Estimates of heritability have been small to large, ranging from .32 to .82 (Betjemann, Keenan, Olson, & DeFries, 2011; Betjemann et al, 2008; Hart, Petrill, & Kamp Dush, 2010; Keenan, Betjemann, Wadsworth, DeFries, & Olson, 2006; Logan et al, 2013; Petrill, Deater-Deckard, Schatschneider, & Davis, 2007). Additionally, there are low to moderate shared environmental influences on reading comprehension, ranging from .01 to .47 (Betjemann et al, 2008; Logan et al, 2013; Petrill et al, 2007), and low to moderate non-shared environmental influences, ranging from .13 to .31 (Betjemann et al, 2011; Byrne et al, 2009; Keenan et al, 2006).…”
mentioning
confidence: 99%