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When Does Maturity Set In?

An anonymous reader writes "Two Dartmouth researchers claim that they are one step closer to discovering at what age human maturity sets in. From the article: 'For the study, Baird and graduate student Craig Bennett looked at the brains of nineteen 18-year-old Dartmouth students who had moved more than 100 miles to attend college. A control group of 17 older students, ranging in age from 25 to 35, were also studied for comparison. The results indicate that significant changes took place in the brains of these individuals. The changes were localized to regions of the brain known to integrate emotion and cognition. Specifically, these are areas that take information from our current body state and apply it for use in navigating the world.'"

13 of 300 comments (clear)

  1. Maturity or additional Memories by LiquidCoooled · · Score: 5, Funny

    When moving away from home you encounter a hell of a lot of new experiences and theres so much to learn and take in.

    For instance, embedding the location of the pub and distance to the nearest kebab shop are key.

    Students who cannot manage this feat rarely last a week, you see them cold hungry and sober in lectures wishing they were back at home.

    Of course your brain matures when you leave home though, you do have to adapt, because you just couldn't survive if you let your mummy do everything.

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  2. Re:Never! by FinchWorld · · Score: 5, Funny

    You're never going to get first post! Grow up!!!!!

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  3. 30 year old here. by fixinah · · Score: 5, Funny

    And I would just like to say POOP! *giggle*

  4. "Significant changes" by user24 · · Score: 5, Funny

    From TA:

    "During the first year of college .... significant changes took place in the brains of these individuals"

    - yeah, because it's the first year of college - they're all busy pickling their brains with newly found alcohol and drugs.
    duh.

  5. Age by Elitist_Phoenix · · Score: 5, Interesting

    Here is a link to and science program in Australia called Catalyst. I actually managed to watch this episode and this reminded me of it and I was bored enough to google for a link.

    What it says is that the brain doesnt mature fully until the age of 25.

    http://www.abc.net.au/catalyst/stories/s1424747.ht m

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  6. Re:It depends... by Farmer+Tim · · Score: 5, Funny

    That's because you don't really appreciate being 18 until you're 35.

    Ouch, my arthritis!

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  7. Think about why car insurance gets cheaper at 35 by aegilops · · Score: 5, Insightful

    There has to be a statistical reason why your car insurance is so absurdly high when you're a late teen, with a steady decrease before a significant reduction at the age of 35. Certainly your appetite for risk behind the wheel doesn't completely reflect your all round maturity in life, but I'd suggest a strong correlation.

    Aegilops

  8. Control group? by nordelius · · Score: 5, Insightful
    Maybe I'm missing something, but wouldn't a suitable control group comprise 18 year olds who didn't go to college? As the experiment stands, you could argue either that:

    a) going to college changes your brain
    b) being 18 and full of hormones changes your brain
    c) both to varying extents

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  9. The problem with this post by museumpeace · · Score: 5, Informative
    is that NONE of us can RTFA. All that is posted here is the write-up by a Dartmouth PR person. The link to the journal article hits a roadblock unless you can toss it a Wiley Interscience license cookie...you may be lucky enough to be near a university library..you probably aren't. When I submitted this to the Agonist.org yesterday, I had such access. The paper is long, spends 2/3 of its pages clarifying and justifying its particular use of the somewhat controversialVBM technique and otherwise qualifying its results. The authors are fairly up front about distancing their work from claiming a universal result...how "average" could your findings be based only on 19 Dartmouth freshmen. [did they control for alcohol use?].

    Even with all the disclaimers, they had two supportable contentions:
    1. whatever change it is,[myelination was their pick] higly localized changes in brain areas that integrate emotion and decision ARE changeing.
    2. their data do little to pick apart the nature vs nurture issues that may rule such changes...only supporting the conclusion that at 18 something is still rewiring your brain.
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  10. Re:It depends... by infinite9 · · Score: 5, Interesting

    I've seen 10 year olds whose had a parent killed with more maturity than a 16 year old.

    Indeed. My wife and I adopted two children from russia. Since then, we've done a lot of research into russian children who either spent most of their time in orphanages, or were taken from their russian* parents because of abuse or neglect. There are dozens of cases where a sibling group of three children or so, made up of, say, a 2 year old, 4 year old, and 6 year old, end up with the 6 year old going out and finding food for the younger children, even to the point where the oldest child is starving so that the younger ones can eat. Some of these sibling groups end up adopted by american families. When this happens, the oldest child can't seem to let go of this parental sense of responsability for the younger kids. It's almost like part of their childhood has been lost. So I agree. I think it has to do with the presence of responsability. Nothing makes you grow up faster than having to care for a child of your own.

    * Not to single out the russians. I'm sure there are plenty of examples of this sort of bad situation in every other country including the US.

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  11. Re:It depends... by Retric · · Score: 5, Insightful

    "nineteen 18-year-old Dartmouth students who had moved more than 100 miles to attend college" vs "A control group of 17..."

    With a sample size that small you realy can't tell anything specific.

    I don't know how they can try and publish a study where they look at such a small sample size, and assume the diffrence between the older and younger group's brain is based on maturity. Now if they had tracked 100 people from age 12 to 30 and compared brain scans with their behavior they could get good data but this study is worthless.

  12. I am the first author by benntop · · Score: 5, Informative

    It is good to see a lot of thoughtful comments here regarding the paper.

    If you have any questions for me specifically then please reply to this post and I will try to answer as directly as I can.

    Best,
    ~Craig

    1. Re:I am the first author by benntop · · Score: 5, Informative

      The linked Slashdot article is just the College Relations department press release. You can look at the full prepress PDF at the following address:

      http://www.theteenbrain.com/about/publications/pdf s/2005-Bennett-VBM.pdf