Final answer:
A control condition is a part of a research experiment that does not change and is used as a basis for comparison. It controls for factors that may influence the results. Alternative types of control conditions include placebos, no treatment, and different treatments.
Step-by-step explanation:
A control condition is a part of a research experiment that does not change during the experiment, serving as a basis for comparison. Its purpose in research on treatment effectiveness is to control for factors that may influence the results
so that the experimental manipulation is the only difference between groups. Some alternative types of control conditions include using a placebo treatment, a group that does not receive any treatment, or a group that receives a different treatment.