A group of researchers studied the effects of background noise (music versus TV) and snack habits (sweet versus salty) on information retention in college students. This describes what type of study?

Question

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A factorial design involves the simultaneous manipulation of two or more independent variables. In a double-blind study, neither the researchers nor subjects are aware of who is in the treatment versus control group. In a cross-over design, treatment conditions are randomized to a single group of subjects.

A Group of Researchers Studied the Effects of Background Noise