In the case of crystallized and fluid intelligence:
A) the former remains stable across age while the latter begins to decline around 30
B) both remain relatively stable across the lifespan
C) both begin to decline around 30, with the former showing the bigger losses
D) both remain stable until about 60 and then decline dramatically

Question

Quizplus · Accepted Answer

Crystallized intelligence refers to knowledge gained through experience and education, such as vocabulary and general knowledge, which tends to remain stable or even increase with age. In contrast, fluid intelligence refers to the ability to solve problems and reason abstractly, which tends to decline beginning around the age of 30. Research has shown that while both types of intelligence play important roles in cognitive functioning and real-world success, the decline in fluid intelligence can result in difficulties with tasks that require rapid problem-solving or adaptation to new situations.

In the Case of Crystallized and Fluid Intelligence