A researcher discovers a high positive correlation between intelligence and good health. What does this mean?
A) One variable is the cause; the other variable is the effect.
B) Both of these variables reciprocally influence each other.
C) Both of these variables occur together and at similar rates.
D) One variable will increase as the other variable decreases.
Question 2
Dr. Rich is conducting research that examines whether 20-year olds eat more low-fat foods than 70-year olds. This research is using a ________________ design.
A) cross-sectional
B) experimental
C) ex post facto
D) retrospective