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 expsoure to the Internet and IQ at age 20?

Question

Quizplus · Accepted Answer

A is not an example of a correlational study because it is investigating whether a specific treatment (a new reading curriculum) causes a change (an increase in reading comprehension test scores). Correlational studies only investigate the relationship between variables, not causation. B, C, and D are all examples of correlational studies because they are examining the relationship between two variables without manipulating any variables.

Which of the Following Is NOT an Example of a Correlational