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KirkegaardEmil's profile
Emil O W Kirkegaard
Emil O W Kirkegaard
Emil O W Kirkegaard
@KirkegaardEmil

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Emil O W Kirkegaard

@KirkegaardEmil

#psychology #genomics #hbd #rstats #statistics #genomics #transhumanism #dataviz #openscience #psychometrics @OpenPsychJour

Denmark
emilkirkegaard.dk
Joined January 2012

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    1. Joel Fish‏ @joelwatsonfish Jan 1
      • Report Tweet

      Okay, so the IQ tweet storm has been turned into a Medium post.https://medium.com/incerto/iq-is-largely-a-pseudoscientific-swindle-f131c101ba39 …

      7 replies 8 retweets 24 likes
      Show this thread
    2. Joel Fish‏ @joelwatsonfish Jan 1
      • Report Tweet

      He seems to focus on this graphic a lot, but this scatterplot looks odd. It looks odd because n looks like it's at least a couple hundred, but all the IQ scores are contained within 2sigma of the national mean.pic.twitter.com/rRPT6QeZbF

      1 reply 0 retweets 7 likes
      Show this thread
    3. Joel Fish‏ @joelwatsonfish Jan 1
      • Report Tweet

      But it's also the case that the average IQ of this data set is well above national mean. Doesn't this seem... fishy? @pnin1957 or @KirkegaardEmil ?

      3 replies 0 retweets 4 likes
      Show this thread
    4. halvorz‏ @halvorz Jan 1
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      Replying to @joelwatsonfish @pnin1957 @KirkegaardEmil

      Should be somewhat above the mean, SAT test takers are self selecting. Dunno how high but 110 (eyeball average) doesn't seem wildly implausible.

      1 reply 0 retweets 3 likes
    5. Joel Fish‏ @joelwatsonfish Jan 1
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      Replying to @halvorz @pnin1957 @KirkegaardEmil

      Yeah, mean IQ ~110 for people who take the SAT is reasonable (via selection bias). But with n ~= 200 (eyeballed) why is there no one above 130 IQ? I mean, if the sample mean is .6sigma above the population mean, shouldn't we expect more scores above 130?

      1 reply 0 retweets 5 likes
    6. halvorz‏ @halvorz Jan 1
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      Replying to @joelwatsonfish @pnin1957 @KirkegaardEmil

      The range restriction is bizarre, yes.

      1 reply 0 retweets 1 like
    7. Emil O W Kirkegaard‏ @KirkegaardEmil Jan 2
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      Replying to @halvorz @joelwatsonfish @pnin1957

      Presumably he used data based on a test with a low ceiling, e.g. WORDSUM.

      1 reply 0 retweets 4 likes
    8. Timofey Pnin‏ @pnin1957 Jan 2
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      Replying to @KirkegaardEmil @halvorz @joelwatsonfish

      I'd guess it's based on one of the NLSY samples and the AFQT. The regression of AFQT on SAT looks as below in the NLSY79. The slope levels off at the high end, but I'd think it's b/c the AFQT lacks discrimination there; in military use, everyone scoring >122 gets the same score.pic.twitter.com/N6NyXSfIat

      4 replies 1 retweet 9 likes
      Emil O W Kirkegaard‏ @KirkegaardEmil Jan 2
      • Report Tweet
      Replying to @pnin1957 @halvorz @joelwatsonfish

      Range for IQ here not consistent with his plots. But again, stop giving attention to BS Taleb says. Just retweet the parody accounts.

      8:07 AM - 2 Jan 2019
      • 3 Likes
      • Joel Fish Dave - Grumpy Bot DM Berger
      2 replies 0 retweets 3 likes
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        1. Timofey Pnin‏ @pnin1957 Jan 2
          • Report Tweet
          Replying to @KirkegaardEmil @halvorz @joelwatsonfish

          I haven't engaged Taleb directly because he tends to block critics and I don't want that. He's very entertaining.

          1 reply 0 retweets 5 likes
        2. Joel Fish‏ @joelwatsonfish Jan 2
          • Report Tweet
          Replying to @pnin1957 @KirkegaardEmil @halvorz

          Okay, I'm just now discovering how entertaining he is to follow. Direct engagement will now be avoided.

          0 replies 0 retweets 0 likes
          3. End of conversation
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