What is an IQ ?
An Intelligence Quotient indicates a person's abilities, relative to others of the same age, which are used to obtain skills and knowledge or to function in complex social situations. Everyone has hundreds of specific mental abilities. Some of these abilities can be measured accurately and are reliable predictors of an individual's academic achievements.
Though an IQ test measures only a few mental abilities, these few are targeted for measurement because they are well known to correlate highly with many other abilities. These measured abilities strongly indicate how one would be expected to score on a test for more specific abilities, and gives a good overall view of an individual's general intelligence.
It's fast, fun, and surprisingly accurate!