What I'm about to insert here is a non sequitur, but I think it's an important topic. One of the key questions about intelligence to which I'd like answers is that of how various intellectual capabilities scale as intelligence rises (probably measured using IQ tests that don't depend upon vocabulary).. When we used the mental age concept, we at least had that
For example,
(1)  How does vocabulary increase as intelligence increases?
(2)  Does it rise more rapidly for those with below-average intelligence, because of their more frequent exposure to unfamiliar words and their desire to keep up, than it does for those with above-average intelligence?
(3)  How independent are total vocabulary and verbal fluency?
(4)  How does the ability to spot relationships among common words (which would be more of a measure of "fluid g" than would total vocabulary) scale with IQ?
(5)  How do learning rates scale with intelligence? Do they rise exponentially?
(6)  How about problem-solving speeds? Problem-solving depths?
(7)  Do learning rates for rote-mechanical learning differ from those that require comprehension? "Creative insight"?

    There must surely have been research performed in these areas. The answers may be out there in publications, although I haven't found them in books like Arthur Jensen's "The g Factor" or Hans Eysenck's "Genius". But if not, I think that research is needed in these areas. Tackling this research on a formal basis would probably require the ability to give all the participants the same IQ test or tests. However, it could be done informally by anyone at any time. Shall we try it? I can send a letter to the top 100 scorers on Peter Schmies' Word Classification Test and see if they would be willing to privately reveal IQ scores that we could match with their Word Classification scores. Or would you like to contact them? I should think that this would be a useful and interesting experiment.
    Requesting similar information from the "Great Literati" who took Tejay Sener's 600-Word Vocabulary  Test might be another way to cut this pie.