A scientist investigates if there is a statistical relationship between people's IQ scores and their risk of committing suicide. After months of tracking smokers and nonsmokers, she finds that the lower people's IQ scores are, the greater their risk is of attempting suicide at some point in their life. This scientist is using the ______ method of research.
A) laboratory observation
B) correlational
C) survey
D) experimental

Question

Quizplus · Accepted Answer

The scientist is investigating whether there is a statistical relationship between people's IQ scores and their risk of committing suicide. This is a correlational method of research, as it is examining the relationship between two variables without manipulating one variable to see its effect on the other (as in experimental research). The scientist is not conducting a laboratory observation or a survey.

A Scientist Investigates If There Is a Statistical Relationship Between