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

Control Group

In an experiment, the group that is not exposed to the treatment and is used as a benchmark to measure how the other tested subjects do.

Independent Variable

The variable in an experiment that is manipulated or changed in order to test its effects on a dependent variable.

Dependent Variable

A variable in an experiment that is expected to change in response to changes in the independent variable.