The study specifically controlled to find causationhttps://twitter.com/brobrahbrehbro/status/1142592617391120384 …
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Replying to @StefanMolyneux
Nope. Longitudinal studies can't reveal causation unless they do random assignment or include twin/family design that can control for genetic confounds.
5 replies 2 retweets 83 likes -
Replying to @primalpoly
The study followed individuals for over 20 years, testing their IQ at 13, and then in their 30s
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Replying to @StefanMolyneux
Yes. But longitudinal studies by themselves cannot show causation. Bad study design + low power + no genetic controls + no randomization = no scientific value.
3 replies 2 retweets 15 likes -
Replying to @primalpoly @StefanMolyneux
What kind of study design would satisfy your criteria for causation?
1 reply 0 retweets 0 likes
Replying to @philosophicart @StefanMolyneux
Extended twin family design, as often used in behavior genetics.
7:31 AM - 23 Jun 2019
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