Cross-sectional research indicated that during early and middle adulthood,aging is associated with ________ levels of intelligence. Longitudinal research indicated that during this period of life,aging is associated with ________ levels of intelligence.

Question

Quizplus · Accepted Answer

Cross-sectional research (studying people of different ages at the same time) has found that intelligence tends to be stable during early and middle adulthood. However, longitudinal research (studying the same individuals over time) has found that intelligence tends to decline during this period of life. Therefore, the correct answer is declining (for both cross-sectional and longitudinal research) and the best choice is C.

Cross-Sectional Research Indicated That During Early and Middle Adulthood,aging Is