Sex differences in mental test scores, variability, and numbers of high-scoring individuals.

@article{Hedges1995SexDI,
  title={Sex differences in mental test scores, variability, and numbers of high-scoring individuals.},
  author={Larry V Hedges and Amy Nowell},
  journal={Science},
  year={1995},
  volume={269 5220},
  pages={
          41-5
        }
}
Sex differences in central tendency, variability, and numbers of high scores on mental tests have been extensively studied. Research has not always seemed to yield consistent results, partly because most studies have not used representative samples of national populations. An analysis of mental test scores from six studies that used national probability samples provided evidence that although average sex differences have been generally small and stable over time, the test scores of males… 

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