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.
Updated February 06, 2017. Republican Ronald Reagan became the oldest president elected when he took office as the 40th president of the United States. The actor turned politician served two consecutive terms as president, from 1981 to 1989. Dates: February 6, 1911 -- June 5, 2004.