My Tiny World

Firstborns found to be more intelligent

Posted on: June 25, 2007

LOS ANGELES, June 24 (Xinhua) — Eldest children are more likely to be more intelligent than their younger siblings, according to a new study.

    Eldest children have IQs 2 to 3 points greater than younger siblings’, and the reason is not genetics, but the way their parents treat them, according to the study published in the latest issue of the journal Science.

    Researchers at the University of Oslo collected data from 240,000 Norwegian men and found that firstborns had an average IQ of 103.2, about 2 points higher than second-born males and about 3 points higher than men born third.

    Lead author Petter Kristensen, an epidemiologist at the University of Oslo and a second-oldest son, said he did not believe in the “birth-order effect” when he started his research, which was originally aimed at assessing the validity of IQ tests.

    In the research, Kristensen and his colleagues required that all conscripts in the Norwegian army undergo an IQ test. Kristensen looked at test results of all conscripts ages 18 to 19 between 1985 and 2004.

    His analysis found that firstborns had an average IQ of 103.2, about 2 points higher than second-born males and about 3 points higher than men born third.

    Using the same data, the researchers sought to find an answer to the cause of this disparity. They looked at second- and third-born men who became the eldest in their families due to the death of one or two older siblings.

    The researchers found that those men had IQs close to that of firstborns, with second-born men at 102.9 and third-borns at 102.6.

    The findings suggested that the mechanism behind the birth-order effect is not biological but related to social interactions within families.

    The researchers surmised that older children are showered with attention early in life and treated as leaders in the family. They are handed more responsibility after younger siblings are born and live with higher expectations from their parents.

    Though the IQ disparity 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. 

About these ads

5 Responses to "Firstborns found to be more intelligent"

Thank you so much for this awesome article. this is exactly
what I needed to see :)

Appreciating the commitment you put into your website and detailed information you present.
It’s great to come across a blog every once in a while that isn’t
the same outdated rehashed material. Great read!
I’ve saved your site and I’m including your RSS feeds to my Google account.

My coder is trying to convince me to move to .
net from PHP. I have always disliked the idea because of
the costs. But he’s tryiong none the less. I’ve been using Movable-type on numerous websites for about a year
and am concerned about switching to another platform. I have heard good things about blogengine.
net. Is there a way I can transfer all my wordpress content into it?
Any help would be greatly appreciated!

Even though your goal is just to lose 5 pounds in a week, you should be strict with what you do
so as not to inadvertently undo all your hard work for vegetarian weight loss.

Withdrawal from levothyroxine can be done but it takes
6 weeks of withdrawal for the remaining thyroid tissue to be completely starved.
Expect to lose all that extra flabbiness as you melt off all your unwanted fat.

Pretty nice post. I simply stumbled upon your weblog and wished to say that I have really enjoyed surfing around your blog posts.
After all I’ll be subscribing in your feed and I hope you write again very soon!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Follow

Get every new post delivered to your Inbox.

%d bloggers like this: