Daniel conducts a study looking at the relationship between exercise and depression and finds there is a negative correlation. Daniel concludes that exercise causes people to become less depressed. However, a colleague points out the possibility that less depressed people may simply be more likely to exercise. This represents a problem in interpreting correlations best known as ____________.

Question

Quizplus · Accepted Answer

The problem of direction refers to the issue of determining which variable is the cause and which is the effect in a correlation.

Daniel Conducts a Study Looking at the Relationship Between Exercise