What is the Control Group in an experiment?

What is the Control Group in an experiment?

• A. The group that does not receive the special treatment
• B. The group that receives the experimental treatment
• C. The group used for repeated trials
• D. The group where outcomes are unknown

Answer: (A)

A control group provides the baseline for comparison in an experiment. It does not receive the experimental treatment, so any differences observed between the control group and the treated group can be attributed to the treatment itself rather than other variables. All other conditions are kept the same between the groups, which helps isolate the effect of the treatment. Sometimes a placebo is used to keep participants and researchers from being biased by expectations. The group that actually receives the treatment is the one being tested, while replication and unknown outcomes are separate aspects of experimental design.

A control group provides the baseline for comparison in an experiment. It does not receive the experimental treatment, so any differences observed between the control group and the treated group can be attributed to the treatment itself rather than other variables. All other conditions are kept the same between the groups, which helps isolate the effect of the treatment. Sometimes a placebo is used to keep participants and researchers from being biased by expectations. The group that actually receives the treatment is the one being tested, while replication and unknown outcomes are separate aspects of experimental design.