Many cross-sectional studies show that crystallized intelligence __________.
A) declines steadily after age 20
B) declines swiftly after age 40
C) increases steadily through middle adulthood
D) rises swiftly through early adulthood, and then falls slowly

Question

Quizplus · Accepted Answer

Crystallized intelligence refers to the accumulated knowledge and skills gained over time through education and experience. The majority of cross-sectional studies have found that crystallized intelligence continues to increase steadily through middle adulthood, peaking around age 60 or 70, before showing a slight decline in old age. Therefore, option C is the best choice.

Many Cross-Sectional Studies Show That Crystallized Intelligence __________