Multiple choice If Jane's intelligence quotient is 100, we know that she has a perfect score on a set of age-related tests test performance superior to 90% of the other children with the same age who took the test mental age typical of children who have the same chronological age mental age below than the children with the same chronological age Reveal answer Fill a bubble to check yourself C Correct answer Explanation An IQ of 100 represents the mean score for a given age group. It indicates that an individual's mental age is equal to their chronological age.