The heritability of intelligence in Japan
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Japanese data for 543 monozygotic (MZ) twins and 134 dizygotic (DZ) twins tested for intelligence at the age of 12 give correlation coefficients of. 782 and .491, respectively, indicating a heritability of .582. Heavier twins at birth have significantly higher IQs at the age of 12, suggesting that prenatal nutrition exerts a significant effect on intelligence.
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- The heritability of intelligence in Japan
Volume 20, Issue 4 , pp 545-546
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- Kluwer Academic Publishers-Plenum Publishers
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- prenatal nutrition
- birth weight