Intelligence Quotient - IQs of Celebrity, Rich and Famous

Wechsler Bellevue Intelligence Test

The Wechsler Bellevue Intelligence Test uses an information test, a general comprehension test, a memory span test (digits forward and backward), an arithmetical reasoning test, a similarities test, a vocabulary test, a block design test, an object assembly test and a digit symbol test to measure mental processing.

This test rates average intelligence at 100 with a standard deviation of 15.

Stanford Binet IQ Test

The Stanford Binet IQ Test measures mental processing in four areas including verbal reasoning, quantitative reasoning, abstract and visual reasoning, and short-term memory skills. These areas include 15 subcategories including verbal acuity, vocabulary, comprehension, verbal absurdities, pattern analysis, matrices, paper folding and cutting, copying, quantitative, number series, equation building, memory for sentences, memory for digits, memory for objects, bead memory.

The Stanford Binet IQ Test has recently (1986) added a knowledge element to the test.

This test rates average intelligence at 100 with a standard deviation of 15.

The minimum accepted score on the Stanford-Binet test to be accepted into Mensa is 132.

Wonderlic Intelligence Test

The Wonderlic Test measures learning and problem solving aptitude for many occupations but is most famously used in the NFL to test new players.

Average intelligence on the Wonderlic Test is 20. Multiplying the Wonderlic result by 2 and adding 60 gives a comparable IQ.

Mensa does not consider the Wonderlic Test to be a reliable or suitable test for inclusion into Mensa.

What the IQ Scores Mean

All IQ scores fit on a bell curve with the majority of IQs falling in the middle, thus making 100 the average IQ score.

50% of IQ scores fall between 90 and 110
70% of IQ scores fall between 85 and 115
95% of IQ scores fall between 70 and 130

The vast majority of the world's population, on average, are within 2 standard deviations of the norm.

140 is considered to be the genius IQ level. A score of 134 equals the top 1% of all people in the world, so a Genius score of 140 puts you close to the top .1% to .2% of the world's population

70 and below is considered the beginning of mental retardation. A score of 66 equals the bottom 1% of all people in the world.

Mathematically, for every genius in the world, there is one person who is clinically mentally retarded.

Some celebrity IQs are well-publicized and others are just hearsay, but we'll try and present accurate information. If you have a source for more and more accurate famous and infamous IQs, fill us in below. Names below are by ascending IQ.

Boxer Muhammad Ali - 78
Artist Andy Warhol - 86
President George H. W. Bush - 98
President Ronald Reagan - 105
Assassin Lee Harvey Oswald - 118
President George Washington - 118
President John F. Kennedy - 119
President Gerald Ford - 121
President Dwight D. Eisenhower - 122
President George W. Bush - 125
President Lyndon B. Johnson - 126
President Ulysses S. Grant - 130
Actress Jodie Foster -132
Actress Nicole Kidman - 132
President Harry S. Truman - 132
Vice President Spiro Agnew - 135
Actor/Governor Arnold Schwarzenegger - 135
President Bill Clinton - 137
President John Adams - 137
Singer Shakira - 140
Singer Madonna -140
Actress Geena Davis - 140
Secretary of State Hillary Clinton - 140
Author Jean Auel - 140
Actor/Comedian Steve Martin - 142
President Richard Nixon - 143
President Franklin D. Roosevelt - 147
Actress Jayne Mansfield - 149
Actress Sharon Stone - 154
President Jimmy Carter - 156
Physicist Albert Einstein - 160
Microsoft CEO Bill Gates - 160
Director Quinton Tarantino - 160
Physicist Stephen Hawking - 160
Inventor/Statesman Benjamin Franklin - 160
Actor Dolph Lundgren - 160
President Thomas Jefferson - 160
Composer Ludvig Van Beethoven - 165
Naturalist Charles Darwin - 165
Composer Johann Sebastian Bach - 165
Composer Wolfgang Amadeus Mozart - 165
Chess Grandmaster Judith Polgar - 170
Chess Grandmaster Robert Byrne - 170
Mathematician Andrew Wiles - 170
Actress Julie Holiday - 172
Actor James Woods - 180
Israeli Prime Minister Benjamin Netanyahu - 180
Author Charles Dickens - 180
"Smartest Woman in the World" Marilyn Vos Savant - 186
Chess Grandmaster Bobby Fischer - 187
Engineer Philip Emeagwali - 190
Chess Grandmaster Garry Kasparov - 190
"Smartest Man in America" Christopher Langan - 195
"Smartest Man in the World" Kim Ung Yong - 210

What's interesting to notice is that the Smartest man in the world, Kim Ung Yong, is an engineer, while the Smartest man in America, Christopher Langan was a bouncer by trade. Mr. Langan has gone on to own his own horse ranch in Missouri, but has also developed numerous theories including his Cognitive-Theoretic Model of the Universe, which studies the relationship of thought and reality.