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 ____________.
a. The problem of direction
b. The third variable problem
c. Experimenter bias
d. Confounding
Question 2
You conduct a study on college students and find that there is a positive correlation between exercise and happiness. What can you conclude based on your findings?
a. If college students exercise, they will be happy.
b. An increase in exercise is associated with an increase in happiness.
c. An increase in happiness is associated with an increase in exercise.
d. Both an increase in exercise is associated with an increase in happiness and an increase in happiness is associated with an increase in exercise.
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