A confound exists when
A) two variables are combined so that the effect of one cannot be separated from the effect of the other.
B) some aspect of the research situation other than the independent variable affects the dependent variable.
C) the measures used in a study exhibit high reliability but low validity.
D) two studies testing the same hypothesis get different results.

Question

Quizplus · Accepted Answer

A confound exists when two variables are combined so that the effect of one cannot be separated from the effect of the other. For example, if a study was looking at the effect of caffeine on memory, but the caffeine was also paired with exercise, it would be difficult to determine if any memory improvement was due to the caffeine or the exercise. This would be a confound.

A Confound Exists When