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Arithmetic, reading and writing performance has a strong genetic component: A study in primary school children
Eveline L de Zeeuw1, Catharina E M van Beijsterveldt2, Tina J Glasner2
1Department of Biological Psychology, VU University, Amsterdam, the Netherlands; EMGO+ Institute for Health and Care Research, VU University Medical Centre, Amsterdam, the Netherlands.
Learning and Individual Differences
|May 17, 2016
Summary
Genetic factors significantly influence educational achievement in children, outweighing family environment impacts. This study analyzed twin data to understand the origins of differences in academic performance.
Area of Science:
- Educational Psychology
- Behavioral Genetics
- Developmental Psychology
Background:
- Individual differences in educational achievement emerge early in primary school.
- Performance at the end of primary school dictates secondary education placement in the Netherlands.
- Understanding the genetic and environmental contributions to academic performance is crucial.
Purpose of the Study:
- To investigate the heritability of educational achievement in primary school children.
- To determine the influence of genetic factors versus family environment on academic performance.
- To examine potential gender differences in the etiology of educational achievement.
Main Methods:
- Utilized data from the Netherlands Twin Register, including primary school test scores (arithmetic, word reading, reading comprehension, spelling) and a final test.
- Analyzed data from a large cohort of Dutch twins: 1058 monozygotic (MZ) and 1734 dizygotic (DZ) twin pairs for primary school tests, and 2451 MZ and 4569 DZ twin pairs for the final test.
- Employed quantitative genetic modeling to estimate the contributions of additive genetic effects, shared environmental effects, and non-shared environmental effects.
Main Results:
- Individual differences in educational achievement were found to be largely attributable to genetic factors.
- The influence of the family environment on educational achievement was negligible.
- No significant evidence for gender differences in the genetic or environmental influences on educational achievement was observed.
Conclusions:
- Genetic factors play a predominant role in shaping individual differences in educational achievement.
- Family environment has minimal impact on academic performance variations among children.
- The etiological factors underlying educational achievement do not appear to differ between genders.
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