An intelligence quotient (IQ) is a total score derived from several standardized tests designed to assess human intelligence. The abbreviation IQ was coined by the psychologist William Sterne for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in a 1912 book.
Answer: Ronald Reagan became the oldest president when he was elected in 1980 at the age of 69.
Yet in this election -- the oldest matchup between presumptive major party nominees in history -- age is not spoken about nearly as much. Donald Trump turned 70 last month, and would be the oldest president ever elected if he were to win in November. Hillary Clinton will turn 69 just before the election, and if she wins, would be the second oldest president to take office, after Reagan. Yes, Trump has lashed out with attacks about Clinton lacking strength or stamina.