@phl43 maybe you can be so kind as to provide a translation?https://www.breizh-info.com/2018/04/28/94536/etude-qi-moyen-departement-francais …
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That's too bad, it sounded awesome. I'll just put a note in my iPad right now actually.
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Original French data is in these papers. https://osf.io/s64wt/ https://osf.io/bkyzq/ . To calculate the approximate IQ means by region, we need the individual level SD for the odd IQ scale they used. (ping @Nico_uav)
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I just skimmed the table and I have to say that the amount of variation I see doesn't look very plausible.
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No, it's because he transformed the data incorrectly. We can do it better though. If we have the original individual level IQ sd, we can do it directly. Otherwise, I can do an estimate based on data from other countries.
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Who is he? I haven't read the blog post, let alone the 2 papers you just mentioned, so I'm not sure what you're talking about. I thought the estimates in the table that are given in the blog post came from your paper. Do you need me to look through these old papers to find the
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He transformed the values in the original 1980 paper, but did so incorrectly. It's right in the article, stop being lazy. ;)
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I checked some unpublished data data I have, the SD between Danish communes (n = 100ish) is 2.14 with a range of 12.6. If we assume the same value for France, this is the value you need to use on the z-scored versions of the French army data.
End of conversation
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