With regard to fluid and crystallized intelligence, research has concluded that
A)both fluid and crystallized intelligence appear to decline with age
B)both fluid and crystallized intelligence increase or remain stable well into late adulthood
C)fluid intelligence improves or remains stable with age but crystallized intelligence appears to decline in late adulthood
D)crystallized intelligence improves or remains stable with age but fluid intelligence appears to decline in late adulthood

Question

Quizplus · Accepted Answer

Crystallized intelligence, which involves the use of learned knowledge and experience, tends to remain stable or even improve with age, while fluid intelligence, which involves the ability to think and reason abstractly and solve problems, tends to decline.

With Regard to Fluid and Crystallized Intelligence, Research Has Concluded