Family dynamics, not biology, behind higher IQ
The eldest children in families tend to develop slightly higher IQs than their younger siblings, researchers were to report Friday, citing a large study that could effectively settle more than a half-century of scientific debate about the relationship between IQ and birth order.The study found that eldest children scored about three points higher on IQ tests than their closest sibling.Some studies find that both the older and younger siblings tend to describe the firstborn as more disciplined, responsible, a better student. Studies suggest - and parents know from experience - that to distinguish themselves, younger siblings often develop other skills, like social charm, a good curveball, mastery of the electric bass, acting skills.
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