Claims that Marilyn Monroe had an extremely high intelligence quotient are frequently offered up without any proof.
Marilyn Monroe's intelligence quotient was measured at 168.
21 shocking facts about Marilyn Monroe
Jayne Mansfield - Wikipedia
The Tragic Truth About Marilyn Monroe's Concealed Intelligence
5 Weird Celebrity Myths Too Many People Still Believe
Marilyn Monroe Madame Tussauds Singapore
Some believe that Marilyn Monroe had an IQ of 168. Why do others insist this is a myth? Is it too far-fetched that she was that smart? - Quora
Marilyn Monroe: 6 Ways The Talented Actress Exceeded Expectations
Playing Dumb with Marilyn Monroe
Archives, Page 26
The 34 Most Fascinating Rumors About Marilyn Monroe