Assessing intelligence by measuring the size of a person's head would be
A) reliable but not valid.
B) valid but not reliable.
C) neither reliable nor valid.
D) both reliable and valid.

Question

Quizplus · Accepted Answer

Measuring head size may be consistent and precise, but it is not a valid measure of intelligence as there is no direct correlation between head size and intelligence. There are many factors that contribute to intelligence such as genes, environment, education, and experiences, which cannot be accurately measured by head size alone. Therefore, it is considered reliable but not valid.

Assessing Intelligence by Measuring the Size of a Person's Head