- Mental age is the age, as measured by an intelligence test, at which a specific level of performance is considered average or usual.
- An individual's intelligence quotient is calculated by first dividing his mental age by his chronological age and multiplying the result by 100.
- (IQ). As a result, a person with the same mental and chronological ages has an IQ of 100 or average intelligence.
- Alfred Binet, a French psychologist who developed the intelligence test in 1905, was the first to define mental age.
- Mental ages can't be used to compare children of different chronological ages' fundamental abilities because the variation in scores for different age groups taking graded tests rises roughly proportionately to the increase in age.
The IQ of person is given by the formula, IQ = m/c x 100, where m is the mental age and c is the chronological age. If 80 ≤ IQ ≤ 140 for a group of 12-year children, find the range of their mental age.
The IQ of a person is given by the formula, IQ = m/c x 100, where m is the mental age and c is the chronological age. If 80 ≤ IQ ≤ 140 for a group of 12-year children, the range of their mental age is 9.6 years or more and 16.8 years or less.