The results of the Seattle Longitudinal Study, which combined the features of cross-sectional and longitudinal studies, showed that
A) earlier cross-sectional studies were accurate.
B) earlier longitudinal studies were accurate.
C) some aspects of intelligence do decline, but others increase through adulthood.
D) intelligence does decline through adulthood, and it does so much more rapidly than either cross-sectional or longitudinal studies predicted.

Question

Quizplus · Accepted Answer

The Seattle Longitudinal Study found that while some aspects of intelligence, such as processing speed, may decline with age, other aspects, like verbal ability, can remain stable or even improve. This nuanced view suggests that intelligence changes in complex ways through adulthood, challenging the simpler narratives of decline.

The Results of the Seattle Longitudinal Study, Which Combined the Features