Older Siblings More Intelligent?

Written by dad - 3 Comments

Interesting… A recent study published in the journal Science shows that birth order influences IQ scores in boys/men. It’s not a big difference (just two points separate first born men from men with older siblings), but still… Please don’t tell my oldest brother about this! And definitely don’t tell Son #1 – he’d never let his little brothers live it down.

Interestingly, prior to age 12 this pattern isn’t evident, apparently because a “younger sibling, being linguistically and cognitively less mature, degrades the firstborn’s intelltectual environment.” Hah. Take that, big brother!

So why does this pattern emerge over time? One expert suggests that it may be because older children get an “intelligence boost” from serving as their younger siblings’ informal tutor “in the ways of the world.”

[Source: CBS News]

Published on July 6th, 2007 - 3 Comments
Filed under: Education
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Comments (scroll down to add your own):

  1. That’s an interesting theory.

    Comment by Blaine Moore — Jul 6th 2007 @ 11:12 am
  2. As the older sibling, now I have substantial facts to prove I’m smarter than my siblings. It’s going to be a fun Thanksgiving dinner this year

    Comment by J2R — Jul 6th 2007 @ 1:21 pm
  3. As the eldest I felt more intelligent in some things but in being laid back I am much less intelligent than my sister so I actually think she is smarter in that life way. 🙂 Just don’t tell her that!

    Comment by Aruni Gunasegaram — Jul 12th 2007 @ 5:26 pm

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