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this post was submitted on 12 Oct 2025
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It does. Simple but important things like sleep impact it hard.
I've had it assessed three times in a clinical context, and lowest was almost 10 points different than highest.
Isn't a standard deviation for IQ 20 points or so? If so, what you're saying is that you took a test 3 times and it gave pretty much the same results all three times.
That's like getting different blood pressure readings at different times and dismissing the validity of blood pressure tests. I and other people can raise blood pressure with a thought. That doesn't negate the value of the test, it just indicates one of its limitations.