A control group should be __________.
A) as different from the experimental group as possible so that an effect can be found
B) matched with the experimental group with respect to the independent variable
C) matched with the experimental group in every way except the independent variable
D) matched with the experimental group in every way except the dependent variable

Question

Quizplus · Accepted Answer

The purpose of a control group is to provide a baseline for comparison with the experimental group. It should be matched with the experimental group in every way except the independent variable, so that any differences observed between the two groups can be attributed to the independent variable being tested. Option C is the best choice in this case. Options A, B, and D are all incorrect because they do not fulfill the requirements for a proper control group.

A Control Group Should Be __________