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.
The oldest elected president was Reagan (age 69); the youngest was Kennedy (age 43). Theodore Roosevelt, however, was the youngest man to become presidentâhe was 42 when he succeeded McKinley, who had been assassinated.