Diego is eight years old, but on intelligence tests he scores at the level typical for a ten-year-old. What is Diego's IQ using the intelligence quotient formula developed by William Stern?

Question

Quizplus · Accepted Answer

Diego's IQ is calculated using the formula: IQ = (Mental Age / Chronological Age) x 100. Here, Mental Age = 10, Chronological Age = 8, so IQ = (10/8) x 100 = 125.

Diego Is Eight Years Old, but on Intelligence Tests He