From a recent e-mail:

WHAT DO YOU THINK OF THIS?
The intelligence of our presidents has never been
seriously scrutinized at any time in our history until
now. There is a widespread perception that President
G. W. Bush is not qualified for the position he holds.

That increasing awareness by the people has led to a
study of the intellectual ability of all presidents
for the past sixty years. There have been twelve
presidents in that time, from F. D. Roosevelt to G. W.
Bush. All were rated based on  scholarly achievements,
writings that they alone wrote, their ability to speak
effectively, and a number of psychological factors.

The conclusions of the study, conducted by an independent
think tank located in Scranton, Pennsylvania were
surprising. This think tank includes high caliber
historians, psychiatrists, sociologists, scientists in
human behavior, and psychologists.  Among their ranks
are Dr. Werner Levenstein, world-renowned sociologist,
and Professor Patricia A. Williams, a world-respected
psychiatrist. All members of the think tank are
experts at being able to detect a person's IQ from
the criteria stated earlier. After four months of
research, these learned men and women have determined
the IQs of each president within a range of five
percentage points. The IQs listed below are the norms
for each president.

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)
99 George HW Bush (R)
182 William J. Clinton (D)
91 George W. Bush (R)

The non-partisan researchers who evaluated the twelve
presidents determined that the six Republican
presidents for the past 50 years had an average IQ of
115.5, with President Nixon having the highest IQ, at
155.   President G. W. Bush was rated the lowest of
all the Republicans with an IQ of 91. The six Democrat
presidents had IQs with an average of 156, with
President Clinton having the highest IQ, at 182.
President Lyndon B. Johnson was rated the lowest of
all the Democrats with an IQ of 126. The margin of
error is plus or minus five percent. This study was
initiated on February 13, 2001 and completed on June
17, 2001.
This study validated the widespread feeling of people
about the sitting president. President Bush was rated
low because of his inability to command the English
language, his lack of any scholarly achievements, and
an absence of anything authored by him that would
reflect an intellectual effort.