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.
1 Ronald Reagan was the oldest president; at the end of his term in 1988, he was nearly 77. 2  Finally, one must live in the United States for at least 14 years to be president, in addition to being a natural-born citizen.