A test administrator, using the intelligence quotient formula developed by Lewis Terman, determined that 12-year-old Kavita had an IQ score of 75. Kavita's mental age would be
A) 16.
B) 12.
C) impossible to determine without more information.
D) 9.

Question

Quizplus · Accepted Answer

The IQ formula developed by Lewis Terman is: IQ = (mental age / chronological age) x 100. Therefore, to determine Kavita's mental age, we need to rearrange the formula to: mental age = (IQ x chronological age) / 100. Plugging in Kavita's IQ score of 75 and her chronological age of 12: mental age = (75 x 12) / 100 = 9. Therefore, Kavita's mental age would be 9.

A Test Administrator, Using the Intelligence Quotient Formula Developed by Lewis