Placebo Effect: The placebo effect occurs when a participant's belief in receiving treatment leads to an improvement in symptoms, even if they received an inactive substance. This highlights how our mind can influence our body's response.
Randomization: Randomization refers to assigning participants randomly to different groups (treatment or control) in order to reduce bias and ensure that each group is representative of the larger population being studied.
Control Group: In a double-blind study, the control group receives either no treatment or a placebo, allowing researchers to compare it with the group receiving the actual treatment. The control group provides a baseline against which changes can be measured.