If a researcher could ethically conduct research to directly find out what CAUSES the relationship between lung cancer and cigarette smoking, what method of research would be most effective for doing this?
A) an experimental study
B) a case study
C) a correlational study
D) a laboratory observation study

Question

Quizplus · Accepted Answer

An experimental study would be the most effective method for determining causality between variables. In this case, a researcher could randomly assign participants to two groups, one that smokes cigarettes and one that does not, and then compare the incidence of lung cancer in each group. This would allow the researcher to draw conclusions about whether or not there is a causal relationship between smoking and lung cancer.

If a Researcher Could Ethically Conduct Research to Directly Find