With respect to intelligence testing in adulthood, scores on items measuring fluid intelligence _____ with age, and scores on items measuring crystallized intelligence _____ with age.
A) increase; increase
B) decrease; decrease
C) decrease; increase
D) increase; decrease

Question

Quizplus · Accepted Answer

Fluid intelligence refers to the ability to reason and solve abstract problems independently of acquired knowledge, whereas crystallized intelligence reflects the knowledge and skills acquired through experience and education. As individuals age, their ability to reason abstractly and solve new problems declines (fluid intelligence decreases), while their accumulated experience and knowledge continue to increase (crystallized intelligence increases). Therefore, the best choice is C.

With Respect to Intelligence Testing in Adulthood, Scores on Items