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Study Links Genetic Diseases to Intelligence

FleaPlus writes "The Economist, Sun-Sentinel, and FuturePundit report on a controversial study by Gregory Cochran and others which proposes a link between certain genetic conditions and above-average intelligence in Ashkenazi Jews. The 40-page study, published in the Journal of Biosocial Science, analyzes data on unusual patterns of genetic disease and relates it to a number of intelligence metrics. Although the intelligence data have traditionally been attributed to cultural factors, Cochran proposes that due to the unusual selection pressures the Ashkenazi faced between 800 and 1600AD certain genes developed which promote intelligence as single copies, but lead to particular diseases when somebody inherits two copies. According to Harvard cognitive scientist Steven Pinker, "It would be hard to overstate how politically incorrect this paper is... [though] it's certainly a thorough and well-argued paper, not one that can easily be dismissed outright.""

6 of 689 comments (clear)

  1. politically incorrect by Turn-X+Alphonse · · Score: 5, Insightful

    Science must never be politically incorrect. It should be the truth, nothing more and nothing less. If you start to use political correct terms you water down the meaning. I'm not going "Say he's a nigger, you know he is", because that's outright wrong, but theres no need to use incorrect terms (AKA African-American if you're not from Africa) to please some minority who seems to think everyone needs a "nice" label and we can't just ignore that people's skin shade can't be controled and means nothing.

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  2. Politically incorrect, Humbug by BigDogCH · · Score: 5, Insightful

    We could use about 100 more such politically incorrect studies to be published, correct or not Maybe then we can get past the "everyone is equal" and "anyone can achieve anything" crap which has been holding Americas schools back.

    I never did well in art classes, even though I tried harder in that class than others. Other kids just dominated in those classes, yet my teachers claimed that it was all about how hard you worked. Bull Crap! We are each born with a range of potential abilities in each area, and our effort/training determine where in that range we land. We have limits, and we are all different. Some of us just will never be able to draw, and some of us will never be able to handle geometry. Accepting this is critical to helping kids achieve greatness.

    Also, when kids fail or really stink at a content area, we need to let them know that they suck! Instead many people want us to give them empty praise, over inflating their ego. Then, later in life, they find out that they cannot achieve anything, and they are not perfect (their peers will point this out). Soon they can be found plotting harm to their peers, and suffering from depression. Hmmm, could it have something to do with their self-image, which our culture and schools built for them?

    No spelling and grammar neve were my strong suite either. Sorry for becomming slightly off topic, but I hate political correctness.

    1. Re:Politically incorrect, Humbug by Oxygen99 · · Score: 4, Insightful

      Bleh. So we destroy any kids who don't show immediate aptitude for a particular discipline while at school? Oops. Bye-bye Einstein. How about the kids who love art but, in your phraseology, suck? Did you not get any enjoyment from it? You did? But you suck, ergo, no art for you. Yes, you're right, promoting people above their ability is a bad thing, but history is replete with people who didn't show their true colours until later in life.

      Jeez. Slashdot and it's intellectual elitist, reductionism. You've got to love it.

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  3. Re:Dismissed by JaxWeb · · Score: 4, Insightful

    That wasn't the paper, that was an article about the paper. The article is here.

    I think the correlation the author tried to present had two variables that may be related but don't necessarily relate one for one.

    Well it doesn't really matter what you think, because this guy actually researched it. His research is more important than your uninformed opinion. Not saying you're wrong, but I'm saying you don't know, so you cannot dismiss it.

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    - Jax
  4. It's all about the measuring stick by DG · · Score: 5, Insightful

    I just finished reading Stephen J Gould's "Mismeasure of Man" http://www.amazon.com/exec/obidos/tg/detail/-/0393 314251/

    which discusses exactly this. Plus I have some real-life experience.

    The biggest problem is that, independant of what point you wish to argue (group X is abnormally intelligent, group Y is sub-par) it's so bloody hard (if not well-nigh impossible) to actually measure intelligence. Even something as simple as measuring brain size turns out to be fraught with difficulties.

    But IQ tests in particular suffer from no end of problems, especially on the lower end of the scale. Did person X score low because they lack intelligence, or because they lack education (not the same thing) or because of other factors.

    I went to a Canadian Military College, which had very high standards of admission. Part of the admissions process was an IQ test of sorts (I don't know if it attempted to generate a classic IQ number, but the questions on it were of the classic "IQ" type)

    As you can imagine, given that 1) I didn't know how much weight this test had on my admission and 2) my whole future depended on getting admitted, taking this test was pretty stressful. I did not do well at all, came close to panic several times during the test, and didn't come close to finishing.

    Happily, I was admitted after all. About a month or two after arriving, we were given the test again. (The local psych department LOVED to give us tests; we were a population tailor-made for testing all sorts of theories) This time, we were told that we were being retested as a way of checking the validity of the test.

    Well after two months of military boot camp, my stress tolerence was much higher. Furthermore, I knew that the results of the test would have no impact on my career. And taking the test was a lot more relaxing than marching around the parade square.

    End result? I aced it. Finished with time to spare. No problem at all. And my peers all reported the same thing.

    Now one could look at the "before" and "after" scores on this test, and conclude that military boot camp raised intelligence, often spectacularly. And you'd be wrong. I and my peers didn't get more intelligent; we got better at handling the stress associated with the test.

    I have serious doubts that intelligence can ever be successfully measured in a rigourous, scientific manner - and that means ANY theory of genetic intelligence, be it high or low, pro or con, can ever be proven out.

    DG

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    Want to learn about race cars? Read my Book
  5. Racial intelligence and Equal Rights by Prien715 · · Score: 5, Insightful

    If genetic group A on average were shown to be generally more intelligent than genetic group B, I don't think this would have huge negative side effects. The problem is that people go from populations to specific instances without a decent grasp of probability.

    For example, light eyed people generally have worse reflexes than darker-eyed people. No baseball recruiter bases their picks on eye-color, they base it on the player's statistics, since it's already factored in. In the same way, if a person from the group with the average lower intelligence got a higher SAT score, higher grades, etc. than someone from the group with "better" genetic intelligence background, the person with the higher scores/grades should to be admitted to college/given the job/etc, just as in the baseball example (note that this decision only depends, like the baseball example, on the desire of the institution to be better, not because of a gov't program or equality concerns).

    Just because a group on average happens to be better than another group, it says nothing determinate about any one member of either group. The group with the lower average intelligence may even have the smartest person as a member and the group with the higher average may the twenty dimmest.

    The only reason a study like this would make a difference this would make is that from a population standpoint, people from one genetic group may have different jobs/salaries/etc than people from another genetic group. While this is trivially true right now, I don't think genetics is necessarily the explaination (or even part thereof). Probably heavily cultural. But how can we know if we don't study it?

    If I say black people are generally taller than Chinese people, that's pretty non-controversial, but any other tests, people are likely to blame the ruler I'm using.

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    -- Political fascism requires a Fuhrer.