The Solomon four-group design has
A) two groups, with each group tested twice.
B) four groups, with each group tested twice.
C) four groups, with two of the groups tested twice and two of the groups tested once.
D) four groups, with three of the groups tested twice and one of the groups tested once.

Question

Quizplus · Accepted Answer

The Solomon four-group design involves four groups: two groups are tested twice (pre-test and post-test), and two groups are tested once (post-test only). This design helps control for the effects of testing and other variables.

The Solomon Four-Group Design Has