Over the years Professor Brown has noticed when returning test papers that the nearer students sit to the front of the lecture hall the higher their test scores tend to be. Which research method is he applying?
a. Case study
b. Correlational
c. Experimental
d. Basic interpretive
e. Ex post facto
Question 2
An investigator can reasonably conclude that changes in one variable produced changes in a second variable only with the ____ research method.
a. naturalistic observation c. correlational
b. case study d. experimental
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