The purpose of matching individual subjects before randomly assigning one to Group A and the other to Group B is to
A) assure that the groups are truly random.
B) assure that the groups are equivalent on the dependent variable.
C) control as many extraneous variables as possible.
D) assure that the groups are not equivalent on the dependent variable.

Question

Quizplus · Accepted Answer

Matching individual subjects before randomly assigning them to different groups is a method used to control as many extraneous variables as possible. By matching subjects on certain characteristics, researchers can ensure that these characteristics do not confound the results of the experiment.

The Purpose of Matching Individual Subjects Before Randomly Assigning One