Psychologist Dinah Moe Asks Each Individual to Take Several Tests

Psychologist Dinah Moe asks each individual to take several tests of specialized intellectual abilities, such as arithmetic, mechanical ability, logical reasoning, and spatial reasoning. Then she measures the correlation between performance on one test and performance on another test. What is she probably trying to determine?

A) whether or not Spearman's concept of a "g" factor is correct
B) whether or not IQ tests have high utility
C) the extent to which heredity and environment influence intelligence
D) whether or not Cattell's concept of fluid and crystallized intelligence is correct