National IQs predict differences in scholastic achievement in 67 countries.

@article{Lynn2007NationalIP,
  title={National IQs predict differences in scholastic achievement in 67 countries.},
  author={Richard Jason Lynn and Gerhard Meisenberg and Jaan Mikk and Amandy Williams},
  journal={Journal of biosocial science},
  year={2007},
  volume={39 6},
  pages={
          861-74
        }
}
This paper examines the relationship of the national IQs reported by Lynn & Vanhanen (2002, 2006) to national achievement in mathematics and science among 8th graders in 67 countries. The correlation between the two is 0.92 and is interpreted as establishing the validity of the national IQs. The correlation is so high that national IQs and educational achievement appear to be measures of the same construct. National differences in educational achievement are greater than differences in IQ… CONTINUE READING

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