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    [–]jet199 3 insightful - 2 fun3 insightful - 1 fun4 insightful - 2 fun -  (0 children)

    They are also taller and thinner.

    [–]IridescentAnaconda 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

    If you read the article, you'll see that the question is very hard to answer because of numerous potential confounders (SES and parental genetics being primary among them).