In an experiment testing the effects of a drug on behavior, whether or not a subject receives a drug represents the:
A) dependent variable
B) independent variable
C) control variable
D) random variable

Question

Quizplus · Accepted Answer

The independent variable is the variable that is deliberately manipulated by the researcher, in this case whether or not the subject receives the drug. Therefore, B is the correct answer. The dependent variable is the variable that is measured and affected by the independent variable, whereas the control variable is a variable that is kept constant to prevent it from affecting the outcome of the experiment. Random variable is a statistical term that refers to a variable whose value is uncertain or random.

In an Experiment Testing the Effects of a Drug on Behavior