You Won’t Believe Which US President Tops the IQ Charts — The Rankings Will Shock You!

Using criteria like brilliance and openness to experience, he estimated their IQs. His findings were published by the International Society of Political Psychology.
Though no president has taken a public IQ test, Simonton’s estimates suggest their scores on a standardized assessment.
At just 14, he became private secretary to the US Minister to Russia, then contributed to the negotiation of the Treaty of Paris at 16 (via the Office of the Historian).
Adams entered Harvard as an advanced student and completed his studies in half the time. He later became the university’s first Boylston Professor of Rhetoric and Oratory.
His career trajectory highlights his intellectual prowess: lawyer, US minister to multiple European nations, Senator, Secretary of State, President, and Congressman.
He co-authored the Monroe Doctrine and led negotiations on key treaties like Ghent and Adams-Onís.
Historian George Herring noted in Cairn that Adams “towered above his contemporaries.”
He remains the most multilingual US president (via POTUS) and the only one to serve in Congress after the presidency, where he strongly opposed slavery until his death.
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