Ten-year-old Kookla is found to have a mental age of 12. According to the traditional Stanford-Binet Scale, Kookla has an IQ of

Question

Quizplus · Accepted Answer

According to the traditional Stanford-Binet Scale, IQ is calculated by dividing a person’s mental age by their chronological age, and then multiplying by 100. In this case, Kookla’s mental age is 12, and her chronological age is 10. So, her IQ is (12/10) x 100, which is equal to 120. Therefore, the answer is D.

Ten-Year-Old Kookla Is Found to Have a Mental Age of 12