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The difference in I.Q. between siblings was a result of family dynamics, not biological factors.
Study Says Eldest Children Have Higher I.Q.s
Seeded on Thu Jun 21, 2007 6:53 PM EDT
Article Source: The New York Times- Enjoy this article? Help vote it up the 'Vine.
- Public Discussion (6)
As the youngest of three kids I object to this story and study but still find it fascinating.
- 2 votes
#1 - Thu Jun 21, 2007 6:53 PM EDTI am the oldest of two and like the idea of the oldest having a higher IQ, but is 3 points really a significant difference?
- 4 votes
#3 - Fri Jun 22, 2007 10:32 AM EDTThe L.A. Times said it is.
Though that may not sound like a lot, experts said even a few IQ points could make a big difference over the course of a lifetime — and set firstborns on a trajectory for success.
UC Berkeley researcher Frank J. Sulloway, who wrote a commentary accompanying the study, said 2 to 3 IQ points could translate to an added 20 to 30 points on an SAT college entrance exam.
"You go to a certain school, meet a famous professor, and the next thing you know, you've gone on to medical school, made a great discovery and won the Nobel Prize," said Sulloway, who writes about family dynamics and personality development.
Also,
A margin of five IQ points represents one-third of the wage gap between white and black Americans, he said. Identifying the factors that affect IQ could lead to ways to correct social inequities, he said.
- 2 votes
The L.A. Times had an interesting bit of information that the New York Times neglected:
Kristensen said it was clear the results don't apply to all families and the odds of the first child being smarter are not overwhelming.
Among brothers with unequal IQ scores, there was a 56.7% probability that the oldest brother would score higher, he said.
- 4 votes
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