VS 
The study determined the following IQs of each president as accurate to within five percentage points:
147 Franklin D. Roosevelt (D)
132 Harry Truman (D)
122 Dwight D. Eisenhower (R)
174 John F. Kennedy (D)
126 Lyndon B. Johnson (D)
155 Richard M. Nixon (R)
121 Gerald Ford (R)
175 James E. Carter (D)
105 Ronald Reagan (R)
098 George HW Bush (R)
182 William J. Clinton (D)
091 George W. Bush (R)
Among comments made concerning the specific testing of President G. W. Bush, his low ratings were due to his apparent difficulty to command the English language in public statements, his limited use of vocabulary (6,500 words for Bush versus an average of 11,000 words for other presidents), his lack of scholarly achievements other than a basic MBA, and an absence of any body of work which could be studied on an intellectual basis. The complete report documents the methods and procedures used to arrive at these ratings, including depth of sentence structure and voice stress confidence analysis.
The Lovenstein Institute of Scranton, Pennsylvania, think-tank includes high-caliber historians, psychiatrists, sociologists, scientists in human behavior, and psychologists. Among their ranks are Dr. Werner R. Lovenstein, world-renowned sociologist, and Professor Patricia F. Dilliams, a world- respected psychiatrist.
This study was commissioned on February 13, 2001, and released on July 9, 2001, to subscribing member universities and organizations within the education community.
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and here is smthing very interesting
During the course of the study, Koko (it is a gorilla) has advanced further with language than any other non-human. Koko has a working vocabulary of over 1000 signs. Koko understands approximately 2,000 words of spoken English. Koko initiates the majority of conversations with her human companions and typically constructs statements averaging three to six words. Koko has a tested IQ of between 70 and 95 on a human scale, where 100 is considered "normal." Michael, the male silverback gorilla who grew up with Koko, had a working vocabulary of over 600 signs.
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G W Bush = 91
gorilla Koko = 95 on a human scale
so Bush has scored 4 points lower than a gorilla!
IT'S A FACT
(Link zum Original)