Which of the following statements is/are true of the differences between fluid intelligence and crystallized intelligence?

I. Fluid intelligence tends to decrease as we age, while crystallized intelligence tends to hold steady or even increase

II. Fluid intelligence tends to increase as we age, while crystallized intelligence tends to hold steady or even decrease

III. Fluid intelligence concerns the ability to acquire new information and skills, while crystallized intelligence deals with knowledge previously acquired

Which of the following statements is/are true of the differences between fluid intelligence and crystallized intelligence?

I. Fluid intelligence tends to decrease as we age, while crystallized intelligence tends to hold steady or even increase

II. Fluid intelligence tends to increase as we age, while crystallized intelligence tends to hold steady or even decrease

III. Fluid intelligence concerns the ability to acquire new information and skills, while crystallized intelligence deals with knowledge previously acquired