Fiona is 8 years old and has a mental age of 10,based on the Stanford-Binet Intelligence Scale.Denise is 10 and has a mental age of 12,based on the Stanford-Binet Intelligence Scale.Using the intelligence quotient scoring system suggested by William Stern,
A) Denise would be considered "more" intelligent than Fiona.
B) Fiona would be considered "more" intelligent than Denise.
C) both girls would be considered equally intelligent.
D) the scores could not be meaningfully compared because the girls are not the same age.

Question

Quizplus · Accepted Answer

The intelligence quotient (IQ) is calculated as (Mental Age/Chronological Age) x 100. Fiona's IQ is (10/8) x 100 = 125, and Denise's IQ is (12/10) x 100 = 120. Therefore, Fiona would be considered "more" intelligent than Denise based on their IQ scores.

Fiona Is 8 Years Old and Has a Mental Age