What is the Control in An Experiment?

The control in an experiment is usually a group of people who don’t receive the intervention. For example if you wanted to test the effects of a new medication, you might select 10 people with symptoms to take the medication for a specified period of time. You might select another 10 people with symptoms who would not take the medication for the same period of time. This would be your control group. The intervention group would be compared against the control to determine if the medication worked.