An experimental group refers to a specific set of individuals or subjects who are exposed to a particular treatment or intervention in a scientific study or experiment. This group is compared to a control group, which does not receive the treatment, in order to determine the effectiveness or impact of the treatment. The experimental group is carefully selected and closely monitored to ensure accurate and reliable results. This term is commonly used in the fields of psychology, medicine, and education, among others, to test new theories, treatments, or interventions and advance our understanding of the world.