The Concept of Mental Age Is Not Really Used in Modern

Multiple Choice

The concept of mental age is not really used in modern tests of intelligence. Why is this the case?

A) Mental age cannot be measured accurately.
B) Mental age is appropriate for children but is not really applicable to adults.
C) Mental age does not reliably show up in factor analysis.
D) While the WAIS uses mental age, the WISC does not.
E) Mental age cannot be normally distributed.