Which of the following statements is true regarding crystallized intelligence and fluid intelligence?
A) the former increases across age, whereas the latter begins to decline around age 30
B) both remain relatively stable across the life span
C) both begin to decline around age 30, with the former showing the bigger losses
D) both remain stable until about age 60 and then decline dramatically

Question

Quizplus · Accepted Answer

Crystallized intelligence, which represents accumulated knowledge and skills, tends to increase across age, while fluid intelligence, which represents the ability to reason and solve novel problems, begins to decline around age 30. This pattern is supported by a variety of research studies.

Which of the Following Statements Is True Regarding Crystallized Intelligence