When one's mental age is lower than one's actual age in years, then
A)the test lacks reliability.
B)one's IQ is over 100.
C)one's IQ is below 100.
D)one's IQ is 100.

Question

Quizplus · Accepted Answer

When one's mental age is lower than one's chronological (actual) age, it means they have scored lower on the IQ test than what is typical for their age, resulting in an IQ score below 100.

When One's Mental Age Is Lower Than One's Actual Age