Marilyn vos Savant (born August 11, 1946) is an American magazine columnist, author, lecturer, and playwright. She was listed as having the highest recorded Intelligence quotient (IQ) in the Guinness Book of Records, a competitive category the publication has since retired. Since 1986, she has written "Ask Marilyn", a Parade magazine Sunday column where she solves puzzles and answers questions on various subjects. Among them was a discussion of the Monty Hall problem, which she answered correctly in 1990.