Diego is 8 years old, but on intelligence tests he scores at the level typical for a 10 year old. Using the intelligence quotient formula developed by Lewis Terman, Diego would have an IQ score of
A) 100.
B) 102.
C) 80.
D) 125.

Question

Quizplus · Accepted Answer

The IQ formula developed by Lewis Terman is IQ = mental age/chronological age x 100. If Diego has the mental age of a 10-year-old, and a chronological age of 8, his IQ would be (10/8) x 100 = 125. Therefore, the correct answer is D.

Diego Is 8 Years Old, but on Intelligence Tests He