Which of the following is NOT an example of a correlational study?
A) Will a new reading curriculum increase reading comprehension test scores made by third graders?
B) Is the chance of having a heart attack related to having a hostile personality?
C) How is wealth related to happiness?
D) Is there an association between childhood exposure to the Internet and IQ at age 20?

Question

Quizplus · Accepted Answer

A is not an example of a correlational study because it involves an intervention (implementing a new reading curriculum) rather than simply observing the relationship between two variables. The other options all involve examining the relationship between two variables without any intervention.

Which of the Following Is NOT an Example of a Correlational