Ten-year-old Sydney's IQ score on the Stanford-Binet Intelligence test was 130. It is likely that her mental age is:
A)10.
B)13.
C)6.
D)15.

Question

Ten-year-old Sydney's IQ score on the Stanford-Binet Intelligence test was 130. It is likely that her mental age is:
A)10. 
B)13. 
C)6. 
D)15.

Quizplus · Accepted Answer

The Stanford-Binet Intelligence test calculates an individual's IQ by dividing the mental age by the chronological age and multiplying by 100. Therefore, if Sydney's IQ score is 130 and she is 10 years old, her mental age would be 13 years old (130/10 x 100 = 1300/10 = 130).

Ten-Year-Old Sydney's IQ Score on the Stanford-Binet Intelligence Test Was