The IQ is the ratio of "mental age" to chronological age, with 100 being average. So, an 8 year old who passes the 10 year-old's test would have an IQ of 10/8 x 100, or 125. Binet's work set off a ...

The standardized psychological tests to determine the biological mental age are intelligence quotient (IQ) test, emotional/social/adversity intelligence tests etc. Each test results provide its ...