Educational achievement is highly heritable, and the common environmental variance is attributable to SES effects¶

Claim · All claims
Evidence · 1 study · associational r3 · q2
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Individual differences in EA were highly heritable (72%), and the common environmental variance component was no longer significant after controlling for SES. → Eveline L. de Zeeuw 2019

Evidence¶

Eveline L. de Zeeuw 2019¶

Eveline L. de Zeeuw, Kees-Jan Kan, Catharina E. M. van Beijsterveldt, Hamdi Mbarek, Jouke-Jan Hottenga, Gareth E. Davies, Michael C. Neale, Conor V. Dolan and Dorret I. Boomsma. (2019). The moderating role of SES on genetic differences in educational achievement in the Netherlands. npj Science of Learning 4:13. https://doi.org/10.1038/s41539-019-0052-2

q2 · i? · associational · r3

Classical univariate twin model on the total sample: MZ and DZ twin correlations of 0.79 and 0.40, heritability of 72%, and a non-significant common environmental component after controlling for SES (Δ−2LL = 0.0, p = 0.963).

"In the total sample twin correlations were 0.79 (MZ) and 0.40 (DZ) and individual differences in EA were highly heritable (72%). The common environmental variance (8%) was attributable to SES effects as shown by the non-signi ficant contribution of the C variance component after controlling for SES ( Δ−2LL = 0.0, Δdf = 1, p = 0.963)."

Discussion¶

Related Claims¶

• Twin-specific shared environments account for a substantial portion of CTD shared-environment estimates for educational attainment and cannot be interpreted as between-family environmental differences — related
• Genetic and environmental variance components of educational achievement decrease with increasing parental SES — related
• Adjusting published twin-study ACE estimates for assortative mating raises mean heritability by about 17 points and lowers shared environmental estimates by about 16 points — related
• The best-fitting NTFD model estimates heritability of educational attainment at 51% and total shared environmental influence at 26%, disaggregated into twin-specific (16%) and sibling-shared (10%) components — related
• Under phenotypic assortment NTFD models, parental education shows no environmental effect on offspring educational attainment once genetic influences are accounted for — related
• A Classical Twin Design model of educational attainment in the TwinLife sample estimates shared environmental influence at 43% and additive genetic influence at 34% — related
• Average educational achievement at age 12 increases with parental SES in the Netherlands — related