Imagine a Graph Showing Fluid and Crystallized Intelligence Scores as a Function

question 159

Multiple Choice

Imagine a graph showing fluid and crystallized intelligence scores as a function of age. Age appears on the x-axis, with increasing age toward the right. One curve portrays fluid intelligence scores; the other, crystallized intelligence scores. Which of the following statements best describes the relationship between the two curves as age increases?

• A) The two curves converge.
• B) The two curves remain parallel.
• C) The curves diverge; the slope of the fluid intelligence curve eventually becomes increasingly negative; the slope of the crystallized intelligence curve does not.
• D) The curves diverge; the slope of the fluid intelligence curve eventually becomes increasingly negative; the slope of the crystallized intelligence curve eventually becomes positive.