48+ Mental Age Intelligence Quotient Formula Background. Iq is a statistical measure that indicates how many standard deviations your intelligence is away. Mental age is a concept related to intelligence.

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This is true until around 18 years, when intellectual abilities are usually fully developed. Iq = mental age ÷ physical age × 100. The intelligence quotient (iq) was originally defined by a formula, devised by stern, comparing mental age and chronological age.

This is true until around 18 years, when intellectual abilities are usually fully developed.

Binet came up with the idea of mental age when he noticed that children are increasingly able to learn difficult concepts and perform difficult tasks as they get older. These days, iq is measured by comparing people's performance on intelligence tests with norms for their own age groups, a purely statistical definition ofiq introduced. Mental age and intelligence quotient are semantically related in measure of intelligence topic. The abbreviation iq was coined by the psychologist william stern for the german term intelligenzquotient.