A child is tested by Alfred Binet. Her test results indicate that she has a mental age of five. What does this mean?
A) She is definitely five years old.
B) She is probably developmentally disabled.
C) There is no meaning that could be attached to the fact that she has a mental age of five.
D) Her score is the same as the average score of a group of five-year-olds.

Question

Quizplus · Accepted Answer

The concept of mental age refers to the level of cognitive functioning that is indicated by an individual's performance on a standardized intelligence test. In this case, the child's mental age of five means that her performance on the test was similar to what would be expected of an average five-year-old. It does not necessarily mean that she is actually five years old, nor does it necessarily indicate that she has a developmental disability.

A Child Is Tested by Alfred Binet