experimental group

Plural

experimental groups

the group of subjects or conditions that are exposed to the treatment or intervention being tested

Participants in the experimental group were administered the new drug, while those in the control group received a placebo.
The experimental group showed significant improvements in cognitive function compared to the control group.
Researchers observed a decrease in symptoms among subjects in the experimental group after receiving the therapy.
In the study, the experimental group underwent intensive training sessions, while the control group followed their usual routine.
The experimental group was exposed to higher levels of environmental stressors to evaluate their impact on health outcomes.