Does regular exercise reduce the risk of depression? A researcher finds 2000 men over 40 who exercise regularly and have not had heart attacks. She matches each with a similar man who does not exercise regularly, and she follows both groups for 10 years.
In your submission, please answer the following questions:
Is this an experiment?
What kind of study is it (prospective or retrospective)?
Please explain your answers, and describe the research design with a scheme. Refer to [page number in book] for an example of a scheme.