Even if age is positively correlated with speed of cognitive processing, we cannot conclude that age "caused" this increase because
A) response speed is not usually affected by age.
B) age normally causes a decrease in cognitive speed.
C) only experimental studies can demonstrate cause and effect relationships.
D) only correlational studies can demonstrate cause and effect relationships.

Question

Quizplus · Accepted Answer

Correlation does not imply causation. Only experimental studies can demonstrate cause and effect relationships. Therefore, we cannot conclude that age "caused" the increase in speed of cognitive processing based solely on a positive correlation.

Even If Age Is Positively Correlated with Speed of Cognitive