Which of the following topics would be best suited to comparative research?
One principal difference between comparative research and experimental research is that the comparative researcher does not subject a group to a treatment, but rather observes a group that either by choice or circumstance has been subject to a treatment.
The difference between a retrospective study and a prospective study is
Comparative research studies are by definition less valid than experiments.
The comparative method can be used to answer questions about
Researchers conducting comparative studies use sample groups that are as similar to one another as possible. This is because they want to
When Richard Doll and Austin Hill published their research in 1950, they stated that "smoking is a factor, and an important factor, in the production of carcinoma of the lung." Why couldn't they simply say that smoking causes lung cancer?