True IQ

In genius studies, true IQ, similar to “real IQ”, as contrasted with a fake IQ (or inflated IQ), is an IQ approximation of an individual that is closest to the truth.

Quotes
The following are related quotes:

“One rater (M) has scored on the basis of the record of Goethe’s youth an IQ of 225. Goethe’s true IQ may in the history of mankind have been equaled in a few instances; one may well wonder whether it has ever been exceeded?”
Catherine Cox (1926), Early Mental Traits of 300 Geniuses (pg. 163) [1]

References
1. Cox, Catharine. (1926). Genetic Studies of Genius. Volume II. The Early Mental Traits of Three Hundred Geniuses (GB) (Arc) (pdf) (true IQ, 18+ pgs). Stanford University Press.

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