A researcher designs a study in which he investigates whether drug A is superior to drug B in elevating the mood of a depressed patient. The independent variable in his study is:
A)Drug A
B)Drug B
C)Depressive mood
D)Drug A and B

Question

Quizplus · Accepted Answer

Drug A and B collectively are the independent variable.
The term independent variable refers to a variable that is believed to alter the status of the dependent variable. In this example, the independent variable is the drug type and the dependent variable is depressive symptoms.

A Researcher Designs a Study in Which He Investigates Whether