Of the different methods that purport to measure intelligence,the most famous is the IQ (Intelligence Quotient) test, which is a standardised test designed to measure human intelligence as distinct from attainments.
Intelligence quotient is an age-related measure of intelli-gence level. The word quotient means the result of dividing one quantity by another, and one definition of intelligence is mental ability or quickness of mind.
Usually, IQ tests consist of a graded series of tasks, each of which has been standardised with a large representative population of individuals in order to establish an average IQ of 100 for each test.It is generally accepted that a person’s mental ability develops at a constant rate until about the age of 13, after which devel-opment has been shown to slow down, and beyond the age of 18 little or no improvement is found. When the IQ of a child is measured, the subject attempts an IQ test that has been standardised, with an average score recorded for each age group.
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