Trends in both crystallized and fluid mental abilities reported from the Seattle Longitudinal Study indicate that middle-aged adults
A)show steady increases in nonverbal IQ.
B)often overestimate their intellectual abilities,sometimes with embarrassing results.
C)are "in their prime," not "over the hill."
D)show sharp decrements in ability,starting around age 40.

Question

Quizplus · Accepted Answer

The Seattle Longitudinal Study found that middle-aged adults are "in their prime" when it comes to both crystallized (accumulated knowledge and verbal abilities) and fluid (ability to reason abstractly and solve problems) mental abilities. They do not show sharp decrements in ability until later in life. Therefore, choice C is the correct answer.

Trends in Both Crystallized and Fluid Mental Abilities Reported from the Seattle