IQ is a number meant to measure people cognitive abilities (intelligence) in relation to their age group.

An I.Q between 90 and 110 is considered average; over 120, superior.

Roughly 68% of the population has an IQ between 85 and 115.

The average range between 70 and 130, and represents about 95% of the population.

• IQ Scores & Ratings
• Cautions for Interpreting IQ Scores
• Normal Distribution & IQ Scores
• Low IQ & Mental Retardation
• High IQ & Genius IQ
• Behavioral Ethics

Chris Langan, the man with 200 IQ. Christopher Langan, considered by many to be the world's smartest man.