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Top 20 Smartest Presidents of All Time (And Where Trump Ranks Among Them)

In 2006 Dean Simonton, psychology professor at University of California at Davis, finished researching the “intellectual brilliance” of 42 U.S. presidents.

Some presidents pre-dated modern IQ testing. So Simonton estimated their scores with personality traits referenced in their biographies that indicate an above-average level of intelligence ­‑‑ “wise,” “inventive,” “artistic,” “curious,” “sophisticated,” “complicated,” and “insightful.”

From that study, we compiled a list of the top 20 smartest presidents.  And where the current President (Donald Trump) ranks among them.

CNN