In a Solomon four-group design, if there is no impact of the pretest, _____.
A)the posttest scores will be different for all the groups
B)the pretest scores will be different for all the groups
C)the posttest scores will be the same for all the groups
D)the posttest scores will not be affected

Question

Quizplus · Accepted Answer

In a Solomon four-group design, if there is no impact of the pretest, the posttest scores will be the same for all the groups. This is because the pretest does not affect the outcome, and so the groups that receive the pretest will not have an advantage or disadvantage in the posttest scores. Therefore, the posttest scores will be equivalent across all four groups.

In a Solomon Four-Group Design, If There Is No Impact