Men Aren't Smarter, But Think They Are

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• Breastfeeding Boosts Baby IQs

  Nov 6, 07 4:27 AM CST
  A gene found in 90% of the human race helps explain why breast-fed babies are more intelligent than infants raised on bottled milk, scientists have discovered. Researchers found that the IQs of children who had been breast fed were 6 to 7 points higher than bottle-fed babies—but only if they had a variant of the FADS2 gene, according to the study in the Proceedings of the National Academy of Sciences. More »

• How Firstborns Get Smarter

  Jun 24, 07 9:58 PM CDT
  In the wake of the study released last week on intelligence and birth order, parents and social scientists are scrambling to explain why firstborns score an average of three IQ points over subsequent children. Theories range from the role older children play as tutors to younger sibs to the notion that adding a child may diminish the family’s  "intellectual environment."  More »

• Oldest Kids Take Lead in Sibling Rivalry

  Jun 22, 07 9:29 AM CDT
  Big siblings have long suspected it, and now science backs them up: Oldest children have slightly higher IQs than younger kids. Family dynamics, not biological factors, account for the 3-point discrepancy, which holds up for children who become the oldest after the firstborn dies. That tiny gap may mean the difference between a "name" college and a state school. More »