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Genes Important to Keep Brain Sharp Through Old Age
Live Science ^ | 18 January 2012 | Jennifer Welsh

Posted on 01/19/2012 5:54:05 AM PST by Pharmboy

A person's intelligence is mostly inherited, it's in their genes, but whether a person can expect to be a clever grandma or grandpa relies on both genes and environment.

"Until now, we have not had an estimate of how much genetic differences affect how people's intelligence changes across the lifetime," study researcher Ian Deary, of the University of Edinburgh in the United Kingdom, said in an email to LiveScience. "These new results mean that researchers can seek both environmental and genetic contributionsto successful cognitive aging."

Previous studies of the genetics of intelligence have been performed on sets of twins or siblings who have been adopted and raised in different environments. These studies showed a genetic component of intelligence, but previous studies weren't able to determine how this changes over a lifetime.

Smart Scots

The researchers studied a group of 1,940 Scottish individuals whose intelligence was measured when they were 11 years old. They were tracked down recently and had their intelligence measured again in old age (65, 70 or 79 years of age). The researchers also collected genomic data from blood samples.

(Excerpt) Read more at livescience.com ...


TOPICS: Health/Medicine; Science; Society
KEYWORDS: environment; genes; genetics; godsgravesglyphs; helixmakemineadouble; intelligence
Stephen Jay Gould, call your office.
1 posted on 01/19/2012 5:54:13 AM PST by Pharmboy
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To: neverdem; SunkenCiv; blam; aculeus; thefactor; wagglebee

Ping for smart genes that keep us smart...


2 posted on 01/19/2012 5:56:29 AM PST by Pharmboy (She turned me into a Newt...but I got better.)
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To: Pharmboy
A person's intelligence is mostly inherited, it's in their genes ...


3 posted on 01/19/2012 5:57:22 AM PST by oh8eleven (RVN '67-'68)
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To: Pharmboy

“...researchers can seek both environmental and genetic contributionsto successful cognitive...”

Dangerous turf.

This presumes that some people start out with more smarts ... and so end up with more smarts. Right?


4 posted on 01/19/2012 5:58:52 AM PST by SMARTY ("The man who has no inner-life is a slave to his surroundings. "Henri Frederic Amiel)
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To: oh8eleven

Yes...I was also struck by that first sentence. She treated it as it was settled science (which it is)...only the ostriches tried to deny it.


5 posted on 01/19/2012 5:59:27 AM PST by Pharmboy (She turned me into a Newt...but I got better.)
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To: Pharmboy

FTA: On the other hand, whether this intelligence changes over time, they found, is very reliant on the environment.

Well, duh!


6 posted on 01/19/2012 6:10:45 AM PST by afraidfortherepublic
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To: Pharmboy

Levis or Wranglers?


7 posted on 01/19/2012 6:16:06 AM PST by BwanaNdege (“Man has often lost his way, but modern man has lost his address” - Gilbert K. Chesterton)
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To: afraidfortherepublic

Actually, the surprise here was how much the environment plays into maintaining (or losing) cognition over time. The intelligence you’re born with is mainly determined by genes (as the article notes, mainly from excellent studies looking at identical twins reared apart), so the findings here were perhaps unexpected by some researchers in this field.


8 posted on 01/19/2012 6:28:30 AM PST by Pharmboy (She turned me into a Newt...but I got better.)
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To: Pharmboy

I’m guessing part of the environmental would include how much ‘exercise’ an individual gives their brain . It’s like a muscle use it or lose it.


9 posted on 01/19/2012 6:37:57 AM PST by reed13k (For evil to triumph it is only necessary for good men to do nothing.)
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To: reed13k

You are a good guesser: the data on what you describe tends to support your supposition.


10 posted on 01/19/2012 6:51:39 AM PST by Pharmboy (She turned me into a Newt...but I got better.)
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To: Pharmboy

Yup.


11 posted on 01/19/2012 7:22:29 AM PST by blam
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To: Pharmboy

My grandmother’s common sense could have predicted this. If you have the ability to understand and learn math, but you never use it throughout your life, you won’t remember how to do algebraic equations when you are 90.

Those famous “Twins Studies” from the University of Minnesota were conducted by Thomas Bouchard, formerly my neighbor in Berkeley when he and my husband were both students at UC. I used to babysit his daughter, Elizabeth, daily to earn extra money. I wonder how many IQ points I shaved off of that child by being exposed to me every day! LOL


12 posted on 01/19/2012 8:23:00 AM PST by afraidfortherepublic
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To: Pharmboy

My grandpa wasn’t just a genius, he could see into the future.
“Come over here and pull my finger and you’ll hear the buck snort.”
Darned if he wasn’t right every time.


13 posted on 01/19/2012 8:23:44 AM PST by blueunicorn6 ("A crack shot and a good dancer")
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To: afraidfortherepublic
Ha! I'm sure you added...you're Freeper, right??

And I have been following Bouchard's work since the '80s when I saw the first reports. Wow...I am impressed.

And, you survived Buhzerkley!

14 posted on 01/19/2012 8:47:06 AM PST by Pharmboy (She turned me into a Newt...but I got better.)
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Half of our chromosomes come from mom, half from dad.

*On average* one quarter come from each grandparent, but obviously there is no integer solution to one quarter of 46, so the concentration of genetic origin begins with the grandparental generation, and it turns into something analogous to the old "war" card game -- an early advantage means eventual victory. Here's some arbitrarily and randomly assigned values, showing the pathway to the 46 of the current hypothetical person (but entirely possible, and given the 2^23 squared possibilities in each generation, this is bound to have happened at least once by now, to someone, somewhere):
0 0 0 1 2 1 0 1 1 0 1 2 0 1 0 0 3 1 2 2 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 0 1 1 0 1 3 0 2 1 1 0 1 0 1 2 1 1 0 1 0 0 1 0 0 1 2 2 0
0 1 3 1 1 3 1 0 4 4 1 1 0 1 2 0 0 0 1 1 4 2 2 1 1 3 1 1 1 0 3 2
1 4 4 1 8 2 1 2 0 2 6 3 4 2 1 5
5 5 10 3 2 9 6 6
10 13 11 12
23 23
46

I started from 46 and worked back, but if we wanted to maximize the number of genetic sources from the 4ggrand generation (46 of 'em, of the 64 on the tree), we need only put zeroes in 18 of them at random, then carry the totals additively downward. Probably would be a lot easier than the pain in the neck I just went through with that. Hope I didn't miss any typos. And of course, the other way to do that is to do the actual family tree and see if there are any duplicate ancestors. :')


15 posted on 01/19/2012 7:11:36 PM PST by SunkenCiv (FReep this FReepathon!)
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To: Pharmboy; StayAt HomeMother; Ernest_at_the_Beach; decimon; 1010RD; 21twelve; 24Karet; ...

 GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach
Thanks Pharmboy.

To all -- please ping me to other topics which are appropriate for the GGG list.


16 posted on 01/19/2012 7:12:18 PM PST by SunkenCiv (FReep this FReepathon!)
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To: Pharmboy; SunkenCiv
A person's intelligence is mostly inherited, it's in their genes, but whether a person can expect to be a clever grandma or grandpa relies on both genes and environment.

A person's intelligence is mostly inherited, it's in their genes, but whether a person can expect to be a clever grandma or grandpa relies on both their accountant and their lawyer...

17 posted on 01/19/2012 7:31:58 PM PST by bigheadfred
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To: Pharmboy; a fool in paradise
I've just bought three pairs of genes at Target. You mean they'll help me remember? What?


18 posted on 01/19/2012 7:36:01 PM PST by Revolting cat! (Let us prey!)
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To: BwanaNdege
"Levis or Wranglers?"

Levi Stauss & Co. support the homosexual agenda and gun-control groups.

Only a Pinkos wear Levis

19 posted on 01/19/2012 7:56:47 PM PST by Godebert (NO PERSON EXCEPT A NATURAL BORN CITIZEN!)
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To: Pharmboy

Insanity is also heritable........ you get it from your kids


20 posted on 01/20/2012 4:22:42 AM PST by bert (K.E. N.P. +12 ..... Crucifixion is coming)
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To: SunkenCiv
It's one-quarter of your genes rather than your 46 chromosomes that you inherit from grandparents...doesn't that make it easier? And the chromosomes trade parts with each other and are not immutable...
21 posted on 01/20/2012 6:10:04 AM PST by Pharmboy (She turned me into a Newt...but I got better.)
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To: Pharmboy
Stephen Jay Gould, call your office.

Exactly. The damage he and Lewontin inflicted on American biology will take decades to fix.

22 posted on 01/24/2012 8:58:16 PM PST by aculeus
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