Which of the following most directly suggested that intelligence declines throughout adulthood?
A) cross-sectional studies
B) cohort studies
C) longitudinal studies
D) correlational estimates

Question

Quizplus · Accepted Answer

Cross-sectional studies compare people of different ages at the same point in time and have consistently found that older adults score lower on measures of intelligence than younger adults. This suggests a decline in intelligence throughout adulthood. Cohort studies follow a specific group of people over time and may not show decline in intelligence if the particular cohort being studied maintains high cognitive abilities as they age. Longitudinal studies, which follow the same individuals over time, may show some decline in intelligence but are subject to biases such as selective attrition. Correlational estimates do not directly suggest a decline in intelligence but may show relationships between various factors and intelligence.

Which of the Following Most Directly Suggested That Intelligence Declines