What aspect is typically excluded from the control group during experiments?

In experiments, the control group serves as a baseline to compare the effects of a treatment intervention on the experimental group. The primary characteristic that is typically excluded from the control group is the treatment intervention itself. This means that participants in the control group do not receive the experimental treatment or intervention being tested, allowing researchers to assess the effect of that intervention by comparing the outcomes between the control and experimental groups.

On the other hand, participant demographics are generally included in both groups to ensure that comparisons are valid and that any observed effects can be attributed to the treatment rather than differences in characteristics. Measurement techniques are also commonly applied to both groups to maintain consistency in how data is collected. Additionally, data reporting applies to both groups, as results from both the control and experimental groups are often analyzed and reported to convey the efficacy of the treatment being studied.