The Solomon four-group design is a combination of the posttest-only control group design and the pretest-posttest control group design.

Question

Quizplus · Accepted Answer

The Solomon four-group design includes two treatment groups and two control groups, with one treatment group and one control group receiving a pretest before the treatment is applied. This design allows for the examination of both the main effects of the treatment and the pretest effect. Therefore, it is a combination of the posttest-only control group design and the pretest-posttest control group design.

The Solomon Four-Group Design Is a Combination of the Posttest-Only