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I believe I found a severe flaw/lie in white nationalist Sean Last's post linked below :
https://ideasanddata.wordpress.com/2019/01/08/nassim-taleb-on-iq/
He reports that average statistical power for intelligence research and "group differences" are 49% and 57% citing this paper : https://psyarxiv.com/ytsvw
https://ideasanddata.wordpress.com/2019/01/08/nassim-taleb-on-iq/
He reports that average statistical power for intelligence research and "group differences" are 49% and 57% citing this paper : https://psyarxiv.com/ytsvw
However this is what the paper actually says : "Furthermore, across primary studies, we found a median power of 11.9% to detect a small effect, 54.5% to detect a medium effect, and 93.9% to detect a large effect."
In his table Sean Last reports mean powers of 14%, 23% and 23% for cognitive neuroscience, psychology and medecine using this paper : https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.2000797
However these are the statistical powers for small effect sizes, whereas for intelligence he seems to report the statistical powers for medium effect sizes.
I wrote "seems" because the values he reported are not even in the paper.
I wrote "seems" because the values he reported are not even in the paper.
The statistical powers for medium effect sizes are 54.5% and 47.7% not 49% and 57%.
The actual statistical powers for small effects are 11.9% and 11,4% for intelligence and group differences respectively.
The actual statistical powers for small effects are 11.9% and 11,4% for intelligence and group differences respectively.
So intelligence research has less power than cognitive neuroscience, and roughly half as much power as medicine or psychology.
Sean used these numbers to make intelligence research stand out as rigorous to prove his racial agenda.
Sean used these numbers to make intelligence research stand out as rigorous to prove his racial agenda.
In many of his other posts he claims that the low socio-economic status of African American people in america is due to their genes with no evidence to support those claims. It's about time people understood that he is not a scholar but simply a liar and a racist. @rasmansa
This stays here as evidence. No post-hoc modifications.
