What type of experiment involves a group receiving a specific treatment and another group receiving no treatment?

The control group is a key component in experimental design as it provides a baseline for comparison. In a study, the control group is the set of subjects that does not receive the treatment or intervention being tested. This allows researchers to observe the effects of the treatment more clearly by comparing the results between the experimental group, which receives the treatment, and the control group, which does not. By using a control group, scientists can reduce the influence of external variables and enhance the reliability of their results, thereby asserting that any observed changes in the experimental group are likely due to the treatment itself rather than other factors.