• taiyang@lemmy.world
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    2 months ago

    16 points, so about a standard deviation. That’s big, but your own varience can be just as high; the original point of IQ is a measure of how well you’ll do in school to detect who may need additional attention (and not an inherent intelligence) so later aged tests include more on knowledge base while earlier tests are more about things like pattern recognition, mental rotation, etc. Infact, it has to get recurved regularly as each generation tends to be roughly 10 or 15 points higher (although idk about gen Z).

    All this is to say that a slump of 16 points doesn’t have to be shit like lead poisoning or gas fumes (although that certainly doesn’t help, and pollution matters), it can simply be the US education system isn’t good at teaching students. Cross culture studies already show that, as do differences between the rich and the poor. Or hell, just playing Tetris raises IQ, lol.

    It’d obviously help if this wasn’t a click bait article, though. People wanting to know why need to read a lot of actual research to know the myriad of different things that impact IQ and not just “haha US stupid.”

      • taiyang@lemmy.world
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        2 months ago

        I technically meant that in regards to not seeing the research lately, but… lol

        • Victor@lemmy.world
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          2 months ago

          I thought it was hilarious, can’t lie. But I don’t think gen Z (or alpha, or beta, or whatever gen is the currently self-aware one) are unintelligent, I just think they have shit influence. Parents need to stay extra vigilant in this age.

          • taiyang@lemmy.world
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            2 months ago

            Real talk the main driver of advances are usually healthier environments, better nutrition and access to knowledge (e g. Via tech). I don’t think Z or alphas are getting better in those regards, kind of inheriting the opposite.

            • Victor@lemmy.world
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              2 months ago

              You might be right on that, indeed. At least some countries are backpedaling hard on all of the above right now.

  • Null User Object@lemmy.world
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    2 months ago

    The sister raised in the US had an IQ 16 points lower than her sibling in Korea. Previous studies revealed that identical twins typically have no more than a 7-point IQ difference, making this case astounding.

  • ⓝⓞ🅞🅝🅔@lemmy.ca
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    2 months ago

    This website’s use of stock images and gifs were aggravating. The actual case study was worth the read, but only covers a single pair of individuals: https://www.sciencedirect.com/science/article/pii/S0191886922001477

    It’s certainly interesting. I’m particularly curious about the effects of the multiple confusions:

    US had three concussions as an adult, caused by car accidents and from falling on ice. The most recent and severe incident occurred in January 2018, resulting in classic symptoms of light sensitivity and concentration difficulty. US feels she is a “different person,” with increased anger and anxiety. She requires additional time to process information in some problem-solving situations, although she has always seen herself as a poor test taker.

    Some of the conclusions seemed a stretch for a single sample. I’m much more curious about more extensive studies with many more subjects.

    • Jeremyward@lemmy.world
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      2 months ago

      Gotta say as someone who experienced traumatic brain injury I also feel like I’m a different person, and not as bright as I used to be. The doctors estimate I lost somewhere on the order of 15-20% of whatever that was.

  • Phoenixz@lemmy.ca
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    2 months ago

    The article is trash, especially with the added stock photos. Use the source link instead