[Sherman Logan]

By contrast, in the historiometric approach, a person’s IQ is quantitatively estimated based on variables having known correlations with IQ, such as highest level of education, academic honors, scores on college admissions exams, occupation, and preferences.

So how would Lincoln score by those criteria?

This is the most idiotic thing I've ever seen. It might work, sort of, for the last 50 years. Before that, no way.

I think it is utterly ludicrous to rank JFK as they do.

To my mind, Lincoln was probably our smartest president.

[Rockpile]

Profiles In Courage demonstrates that Kennedy’s ghostwriter was pretty sharp.

[KosmicKitty]

Agree. To put JFK over Lincoln immediately made my “BS Meter” go off.

Had a friend, one of the smartest people I’ve ever met, who never even graduated from High School. I’ve spent the majority of my adult life working in higher education and educated sure has heck doesn’t mean intelligent.