An 8-year-old child who scored like an average 10-year-old on an intelligence test would have a mental age of ________ and an IQ of ________.
A) 8; 80
B) 8; 125
C) 10; 100
D) 10; 125

Question

An 8-year-old child who scored like an average 10-year-old on an intelligence test would have a mental age of ________ and an IQ of ________.
A) 8; 80 
B) 8; 125
C) 10; 100
D) 10; 125

Quizplus · Accepted Answer

According to the concept of mental age, if an 8-year-old child scores like an average 10-year-old on an intelligence test, it means that the child's mental age is 10 years old. Then, IQ is calculated by dividing mental age by chronological age and multiplying by 100. Therefore, the IQ score of this child would be (10/8) x 100 = 125. Thus, the correct option is D - 10; 125.

An 8-Year-Old Child Who Scored Like an Average 10-Year-Old on an Intelligence