The Solomon four-group design is a pretest-posttest design where ______.
A) the experimental and control groups are randomly assigned
B) there are two experimental and control groups, one that takes the pretest and one that does not take the pretest
C) a historical event is used at the "treatment"
D) the experimental group is randomly assigned

Question

Quizplus · Accepted Answer

In the Solomon four-group design, there are two experimental and control groups. One group takes the pretest and then receives the treatment, while the other group does not take the pretest but still receives the treatment. This allows researchers to account for the potential confounding effects of pretesting on the outcome of the study. The other two groups act as a control, with one taking the posttest only and the other taking both the pretest and posttest.

The Solomon Four-Group Design Is a Pretest-Posttest Design Where ______